diff --git a/songs/Anis/Dans_tes_yeux.sg b/songs/Anis/Dans_tes_yeux.sg
index a12bc7e6..27c6cdc2 100644
--- a/songs/Anis/Dans_tes_yeux.sg
+++ b/songs/Anis/Dans_tes_yeux.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Dans tes yeux}
-  [by=Anis,album=Rodéo Boulevard,cov=Rodeo-Boulevard]
+  [by=Anis,album=Rodéo Boulevard,cov=rodeo-boulevard]
 
   \cover
   \gtab{Dm6}{5:X02210}
diff --git a/songs/Anis/Rodeo-Boulevard.jpg b/songs/Anis/rodeo-boulevard.jpg
similarity index 100%
rename from songs/Anis/Rodeo-Boulevard.jpg
rename to songs/Anis/rodeo-boulevard.jpg
diff --git a/songs/Buena_Vista_Social_Club/Chan_Chan.sg b/songs/Buena_Vista_Social_Club/Chan_Chan.sg
index 7a09c99b..a408d7b0 100644
--- a/songs/Buena_Vista_Social_Club/Chan_Chan.sg
+++ b/songs/Buena_Vista_Social_Club/Chan_Chan.sg
@@ -1,7 +1,7 @@
 \selectlanguage{spanish}
 \songcolumns{2}
 \beginsong{Chan Chan}
-  [by=Compay Segundo,cov=ChanChan,album=Chan Chan]
+  [by=Compay Segundo,cov=chanchan,album=Chan Chan]
 
   \cover
   \gtab{Dm}{100231}
diff --git a/songs/Buena_Vista_Social_Club/ChanChan.jpg b/songs/Buena_Vista_Social_Club/chanchan.jpg
similarity index 100%
rename from songs/Buena_Vista_Social_Club/ChanChan.jpg
rename to songs/Buena_Vista_Social_Club/chanchan.jpg
diff --git a/songs/Crash_Test_Dummies/God_Shuffled_His_Feet.jpg b/songs/Crash_Test_Dummies/god-shuffled-his-feet.jpg
similarity index 100%
rename from songs/Crash_Test_Dummies/God_Shuffled_His_Feet.jpg
rename to songs/Crash_Test_Dummies/god-shuffled-his-feet.jpg
diff --git a/songs/Crash_Test_Dummies/mmm_mmm.sg b/songs/Crash_Test_Dummies/mmm_mmm.sg
index 9237399f..c635f1bc 100644
--- a/songs/Crash_Test_Dummies/mmm_mmm.sg
+++ b/songs/Crash_Test_Dummies/mmm_mmm.sg
@@ -1,7 +1,7 @@
 \selectlanguage{english}
 \songcolumns{2}
-\beginsong{mmm mmm}
-  [by=Crash Test Dummies,cov=God_Shuffled_His_Feet,album=God Shuffled His Feet ]
+\beginsong{Mmm mmm}
+  [by=Crash Test Dummies,cov=god-shuffled-his-feet,album=God shuffled his feet ]
 
   \cover
   \capo{3}
@@ -28,7 +28,7 @@
   \end{verse}
 
   \begin{chorus}
-    \[Em]Mmmm \[Bm]Mmmm \[Em]Mmmm \[Bm]Mmmm \[F]Mmmm \[G]Mmmm \[F]Mmmm \[G]Mmmm \rep{2}
+    \[Em]Mmmm \[Bm]mmmm \[Em]mmmm \[Bm]mmmm \[F]mmmm \[G]mmmm \[F]mmmm \[G]mmmm \rep{2}
   \end{chorus}
 
   \begin{verse}
diff --git a/songs/Gary_Jules/Trading-snakeoil-for-wolftickets.jpg b/songs/Gary_Jules/trading-snakeoil-for-wolftickets.jpg
similarity index 100%
rename from songs/Gary_Jules/Trading-snakeoil-for-wolftickets.jpg
rename to songs/Gary_Jules/trading-snakeoil-for-wolftickets.jpg
diff --git a/songs/Israel_Kamakawiwo_ole/Somewhere_over_the_rainbow.sg b/songs/Israel_Kamakawiwo_ole/Somewhere_over_the_rainbow.sg
index 2fb394ec..aa65d25d 100644
--- a/songs/Israel_Kamakawiwo_ole/Somewhere_over_the_rainbow.sg
+++ b/songs/Israel_Kamakawiwo_ole/Somewhere_over_the_rainbow.sg
@@ -1,7 +1,7 @@
 \selectlanguage{english}
 \songcolumns{2}
 \beginsong{Somewhere over the rainbow}
-  [by=Israel Kamakawiwo'ole,cov=Over-the-rainbow,album=Over the rainbow]
+  [by=Israel Kamakawiwo'ole,cov=over-the-rainbow,album=Over the rainbow]
 
   \cover
   \capo{5}
diff --git a/songs/Israel_Kamakawiwo_ole/Over-the-rainbow.jpg b/songs/Israel_Kamakawiwo_ole/over-the-rainbow.jpg
similarity index 100%
rename from songs/Israel_Kamakawiwo_ole/Over-the-rainbow.jpg
rename to songs/Israel_Kamakawiwo_ole/over-the-rainbow.jpg
diff --git a/songs/Jali/des-jours-et-des-lunes.JPG b/songs/Jali/des-jours-et-des-lunes.jpg
similarity index 100%
rename from songs/Jali/des-jours-et-des-lunes.JPG
rename to songs/Jali/des-jours-et-des-lunes.jpg
diff --git a/songs/Les_Cowboys_Fringants/8_secondes.sg b/songs/Les_Cowboys_Fringants/8_secondes.sg
index 29f01e70..9ff3e341 100644
--- a/songs/Les_Cowboys_Fringants/8_secondes.sg
+++ b/songs/Les_Cowboys_Fringants/8_secondes.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{8 secondes}
-  [by=Les Cowboys Fringants,cov=La-grand-messe,album=La grand-messe]
+  [by=Les Cowboys Fringants,cov=la-grand-messe,album=La grand-messe]
 
   \cover
 
diff --git a/songs/Les_Cowboys_Fringants/Ces_temps_ci.sg b/songs/Les_Cowboys_Fringants/Ces_temps_ci.sg
index ef8d8ace..9d61b567 100644
--- a/songs/Les_Cowboys_Fringants/Ces_temps_ci.sg
+++ b/songs/Les_Cowboys_Fringants/Ces_temps_ci.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Ces temps-ci}
-  [by=Les Cowboys Fringants,cov=La-grand-messe,album=La grand messe]
+  [by=Les Cowboys Fringants,cov=la-grand-messe,album=La grand messe]
 
   \cover
 
diff --git a/songs/Les_Fatals_Picards/Au_mariage_de_Kevin_et_de_ma_s_oe_ur.sg b/songs/Les_Fatals_Picards/Au_mariage_de_Kevin_et_de_ma_soeur.sg
similarity index 100%
rename from songs/Les_Fatals_Picards/Au_mariage_de_Kevin_et_de_ma_s_oe_ur.sg
rename to songs/Les_Fatals_Picards/Au_mariage_de_Kevin_et_de_ma_soeur.sg
diff --git a/songs/Ridan/Ulysse.sg b/songs/Ridan/Ulysse.sg
index c94558d1..310b794d 100644
--- a/songs/Ridan/Ulysse.sg
+++ b/songs/Ridan/Ulysse.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Ulysse}
-  [by=Ridan,cov=L_ange_de_mon_demon,album=L'ange de mon démon]
+  [by=Ridan,cov=l-ange-de-mon-demon,album=L'ange de mon démon]
 
   \cover
   \gtab{Dm}{5:X02210}
diff --git a/songs/Ridan/L_ange_de_mon_demon.jpg b/songs/Ridan/l-ange-de-mon-demon.jpg
similarity index 100%
rename from songs/Ridan/L_ange_de_mon_demon.jpg
rename to songs/Ridan/l-ange-de-mon-demon.jpg
diff --git a/songs/Thomas_Fersen/Bambi.sg b/songs/Thomas_Fersen/Bambi.sg
index 3d1a8876..d42f95d1 100644
--- a/songs/Thomas_Fersen/Bambi.sg
+++ b/songs/Thomas_Fersen/Bambi.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Bambi}
-  [by=Thomas Fersen,album=Pièce montée des grands jours,cov=Piece-montee-des-grands-jours]
+  [by=Thomas Fersen,album=Pièce montée des grands jours,cov=piece-montee-des-grands-jours]
 
 
   \cover
diff --git a/songs/Thomas_Fersen/Chocolat.sg b/songs/Thomas_Fersen/Chocolat.sg
index eb89d0b8..88916c98 100644
--- a/songs/Thomas_Fersen/Chocolat.sg
+++ b/songs/Thomas_Fersen/Chocolat.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{1}
 \beginsong{Chocolat}
-  [by=Thomas Fersen,album=Trois petits tours,cov=Trois-petits-tours]
+  [by=Thomas Fersen,album=Trois petits tours,cov=trois-petits-tours]
 
   \cover
   \gtab{B}{X24442}
diff --git a/songs/Thomas_Fersen/Croque.sg b/songs/Thomas_Fersen/Croque.sg
index 5823356d..a1ee902a 100644
--- a/songs/Thomas_Fersen/Croque.sg
+++ b/songs/Thomas_Fersen/Croque.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Croque}
-  [by=Thomas Fersen,cov=Piece-montee-des-grands-jours,album=Pièce montée des grands jours]
+  [by=Thomas Fersen,cov=piece-montee-des-grands-jours,album=Pièce montée des grands jours]
 
   \cover
 
diff --git a/songs/Thomas_Fersen/Deux_pieds.sg b/songs/Thomas_Fersen/Deux_pieds.sg
index 97e2a188..5b5733e2 100644
--- a/songs/Thomas_Fersen/Deux_pieds.sg
+++ b/songs/Thomas_Fersen/Deux_pieds.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Deux pieds}
-  [by=Thomas Fersen,cov=Piece-montee-des-grands-jours,album=Pièce montée des grands jours]
+  [by=Thomas Fersen,cov=piece-montee-des-grands-jours,album=Pièce montée des grands jours]
 
   \cover
   \gtab{Fm}{1:022000}
diff --git a/songs/Thomas_Fersen/Diane_de_Poitiers.sg b/songs/Thomas_Fersen/Diane_de_Poitiers.sg
index 8fdf503a..b69e4a40 100644
--- a/songs/Thomas_Fersen/Diane_de_Poitiers.sg
+++ b/songs/Thomas_Fersen/Diane_de_Poitiers.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{3}
 \beginsong{Diane de Poitiers}
-  [by=Thomas Fersen,cov=Piece-montee-des-grands-jours,album=Pièce montée des grands jours]
+  [by=Thomas Fersen,cov=piece-montee-des-grands-jours,album=Pièce montée des grands jours]
 
   \cover
   \gtab{B&9}{X10111}
diff --git a/songs/Thomas_Fersen/Dugenou.sg b/songs/Thomas_Fersen/Dugenou.sg
index e52f4a31..56df19b6 100644
--- a/songs/Thomas_Fersen/Dugenou.sg
+++ b/songs/Thomas_Fersen/Dugenou.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{3}
 \beginsong{Dugenou}
-  [by=Thomas Fersen,cov=Qu4tre,album=Qu4tre]
+  [by=Thomas Fersen,cov=qu4tre,album=Qu4tre]
 
   \cover
   \gtab{Em}{022000}
diff --git a/songs/Thomas_Fersen/Irene.sg b/songs/Thomas_Fersen/Irene.sg
index b1af3880..9bad186b 100644
--- a/songs/Thomas_Fersen/Irene.sg
+++ b/songs/Thomas_Fersen/Irene.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Irène}
-  [by=Thomas Fersen,cov=Qu4tre,album=Qu4tre]
+  [by=Thomas Fersen,cov=qu4tre,album=Qu4tre]
 
   \cover
   \gtab{B}{2:X02220}
diff --git a/songs/Thomas_Fersen/Je_n_ai_pas_la_gale.sg b/songs/Thomas_Fersen/Je_n_ai_pas_la_gale.sg
index fa9bdce0..1f9bb930 100644
--- a/songs/Thomas_Fersen/Je_n_ai_pas_la_gale.sg
+++ b/songs/Thomas_Fersen/Je_n_ai_pas_la_gale.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{3}
 \beginsong{Je n'ai pas la gale}
-  [by=Thomas Fersen,cov=Le-pavillon-des-fous,album=Le pavillon des fous]
+  [by=Thomas Fersen,cov=le-pavillon-des-fous,album=Le pavillon des fous]
 
   \cover
   \gtab{Dm}{XX0231}
diff --git a/songs/Thomas_Fersen/L_histoire_d_une_heure.sg b/songs/Thomas_Fersen/L_histoire_d_une_heure.sg
index 9a7409d2..463300eb 100644
--- a/songs/Thomas_Fersen/L_histoire_d_une_heure.sg
+++ b/songs/Thomas_Fersen/L_histoire_d_une_heure.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{L'histoire d'une heure}
-  [by=Thomas Fersen,cov=Les-ronds-de-carotte,album=Les ronds de carotte]
+  [by=Thomas Fersen,cov=les-ronds-de-carotte,album=Les ronds de carotte]
 
   \cover
   \gtab{B7}{2:X02020}
diff --git a/songs/Thomas_Fersen/La_malle.sg b/songs/Thomas_Fersen/La_malle.sg
index 30d8ff65..5a0f26b1 100644
--- a/songs/Thomas_Fersen/La_malle.sg
+++ b/songs/Thomas_Fersen/La_malle.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{3}
 \beginsong{La malle}
-  [by=Thomas Fersen,album=Trois petits tours,cov=Trois-petits-tours]
+  [by=Thomas Fersen,album=Trois petits tours,cov=trois-petits-tours]
 
   \cover
   \gtab{C#m}{4:X02210}
diff --git a/songs/Thomas_Fersen/Le_balafre.sg b/songs/Thomas_Fersen/Le_balafre.sg
index ae98fb10..71500120 100644
--- a/songs/Thomas_Fersen/Le_balafre.sg
+++ b/songs/Thomas_Fersen/Le_balafre.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Le balafré}
-  [by=Thomas Fersen,cov=Je-suis-au-paradis,album=Je suis au paradis]
+  [by=Thomas Fersen,cov=je-suis-au-paradis,album=Je suis au paradis]
 
   \cover
   \gtab{D}{XX0232}
diff --git a/songs/Thomas_Fersen/Le_bouton.sg b/songs/Thomas_Fersen/Le_bouton.sg
index 4af2bb56..112766d1 100644
--- a/songs/Thomas_Fersen/Le_bouton.sg
+++ b/songs/Thomas_Fersen/Le_bouton.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Le bouton}
-  [by=Thomas Fersen \& Bumcello,cov=Tot-ou-tard,album=Tôt ou tard (plutôt tard)]
+  [by=Thomas Fersen \& Bumcello,cov=tot-ou-tard,album=Tôt ou tard (plutôt tard)]
 
   \cover
   \gtab{C}{X32010}
diff --git a/songs/Thomas_Fersen/Le_chat_botte.sg b/songs/Thomas_Fersen/Le_chat_botte.sg
index 19b90b41..7c99c682 100644
--- a/songs/Thomas_Fersen/Le_chat_botte.sg
+++ b/songs/Thomas_Fersen/Le_chat_botte.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{3}
 \beginsong{Le Chat Botté}
-  [by=Thomas Fersen,cov=Piece-montee-des-grands-jours,album=Pièce montée des grands jours]
+  [by=Thomas Fersen,cov=piece-montee-des-grands-jours,album=Pièce montée des grands jours]
 
   \cover
   \gtab{Em}{022000}
diff --git a/songs/Thomas_Fersen/Les_cravates.sg b/songs/Thomas_Fersen/Les_cravates.sg
index 0232671f..daa18486 100644
--- a/songs/Thomas_Fersen/Les_cravates.sg
+++ b/songs/Thomas_Fersen/Les_cravates.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Les cravates}
-  [by=Thomas Fersen,cov=Piece-montee-des-grands-jours,album=Pièce montée des grands jours]
+  [by=Thomas Fersen,cov=piece-montee-des-grands-jours,album=Pièce montée des grands jours]
 
   \cover
   \gtab{C{\shrp}m}{4:X02210}
diff --git a/songs/Thomas_Fersen/Les_malheurs_du_lion.sg b/songs/Thomas_Fersen/Les_malheurs_du_lion.sg
index 817a670e..0c27ee35 100644
--- a/songs/Thomas_Fersen/Les_malheurs_du_lion.sg
+++ b/songs/Thomas_Fersen/Les_malheurs_du_lion.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Les malheurs du lion}
-  [by=Thomas Fersen,cov=Qu4tre,album=Qu4tre]
+  [by=Thomas Fersen,cov=qu4tre,album=Qu4tre]
 
   \cover
   \gtab{Cm}{3:X02210}
diff --git a/songs/Thomas_Fersen/Louise.sg b/songs/Thomas_Fersen/Louise.sg
index b8262fa3..83af9c38 100644
--- a/songs/Thomas_Fersen/Louise.sg
+++ b/songs/Thomas_Fersen/Louise.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Louise}
-  [by=Thomas Fersen,cov=Les-ronds-de-carotte,album=Les ronds de carotte]
+  [by=Thomas Fersen,cov=les-ronds-de-carotte,album=Les ronds de carotte]
 
   \cover
   \gtab{Fm}{1:022000}
diff --git a/songs/Thomas_Fersen/Mon_iguanodon.sg b/songs/Thomas_Fersen/Mon_iguanodon.sg
index 29ca59f3..92d4b04e 100644
--- a/songs/Thomas_Fersen/Mon_iguanodon.sg
+++ b/songs/Thomas_Fersen/Mon_iguanodon.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{3}
 \beginsong{Mon iguanodon}
-  [by=Thomas Fersen,cov=Le-pavillon-des-fous,album=Le pavillon des fous]
+  [by=Thomas Fersen,cov=le-pavillon-des-fous,album=Le pavillon des fous]
 
   \cover
   \gtab{E&}{XX1343}
diff --git a/songs/Thomas_Fersen/Mon_macabre.sg b/songs/Thomas_Fersen/Mon_macabre.sg
index 4eaa3713..9aacb048 100644
--- a/songs/Thomas_Fersen/Mon_macabre.sg
+++ b/songs/Thomas_Fersen/Mon_macabre.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{3}
 \beginsong{Mon macabre}
-  [by=Thomas Fersen,cov=Le-pavillon-des-fous,album=Le pavillon des fous]
+  [by=Thomas Fersen,cov=le-pavillon-des-fous,album=Le pavillon des fous]
 
   \cover
   \gtab{Em}{022000}
diff --git a/songs/Thomas_Fersen/Monsieur.sg b/songs/Thomas_Fersen/Monsieur.sg
index d739fb2a..399d329f 100644
--- a/songs/Thomas_Fersen/Monsieur.sg
+++ b/songs/Thomas_Fersen/Monsieur.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{3}
 \beginsong{Monsieur}
-  [by=Thomas Fersen,album=Qu4tre,cov=Qu4tre]
+  [by=Thomas Fersen,album=Qu4tre,cov=qu4tre]
 
   \cover
   \gtab{Cm}{3:X02210}
diff --git a/songs/Thomas_Fersen/Parfois_au_clair_de_lune.sg b/songs/Thomas_Fersen/Parfois_au_clair_de_lune.sg
index df175f83..121c049e 100644
--- a/songs/Thomas_Fersen/Parfois_au_clair_de_lune.sg
+++ b/songs/Thomas_Fersen/Parfois_au_clair_de_lune.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Parfois au clair de lune}
-  [by=Thomas Fersen,album=Je suis au paradis,cov=Je-suis-au-paradis]
+  [by=Thomas Fersen,album=Je suis au paradis,cov=je-suis-au-paradis]
 
   \cover
   \gtab{C}{x32010}
diff --git a/songs/Thomas_Fersen/Pegase.sg b/songs/Thomas_Fersen/Pegase.sg
index fcc1333d..587b56c2 100644
--- a/songs/Thomas_Fersen/Pegase.sg
+++ b/songs/Thomas_Fersen/Pegase.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{1}
 \beginsong{Pégase}
-  [by=Thomas Fersen,album=Le pavillon des fous,cov=Le-pavillon-des-fous]
+  [by=Thomas Fersen,album=Le pavillon des fous,cov=le-pavillon-des-fous]
 
   \cover
   \gtab{Em}{0022000}
diff --git a/songs/Thomas_Fersen/Punaise.sg b/songs/Thomas_Fersen/Punaise.sg
index 6cfb9754..45400da6 100644
--- a/songs/Thomas_Fersen/Punaise.sg
+++ b/songs/Thomas_Fersen/Punaise.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Punaise}
-  [by=Thomas Fersen,album=Trois petits tours,cov=Trois-petits-tours]
+  [by=Thomas Fersen,album=Trois petits tours,cov=trois-petits-tours]
 
   \cover
   \gtab{Bm}{2:X02210}
diff --git a/songs/Thomas_Fersen/Que_l_on_est_bete.sg b/songs/Thomas_Fersen/Que_l_on_est_bete.sg
index 918320f3..4c0b99b8 100644
--- a/songs/Thomas_Fersen/Que_l_on_est_bete.sg
+++ b/songs/Thomas_Fersen/Que_l_on_est_bete.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{3}
 \beginsong{Que l'on est bête}
-  [by=Thomas Fersen,cov=Le-jour-du-poisson,album=Le jour du poisson]
+  [by=Thomas Fersen,cov=le-jour-du-poisson,album=Le jour du poisson]
 
   \cover
   \gtab{Gm}{3:022000}
diff --git a/songs/Thomas_Fersen/Rititi_ratata_il_parait_qu_elles_aiment_.sg b/songs/Thomas_Fersen/Rititi_ratata_il_parait_qu_elles_aiment_.sg
index e8106c89..5df519a9 100644
--- a/songs/Thomas_Fersen/Rititi_ratata_il_parait_qu_elles_aiment_.sg
+++ b/songs/Thomas_Fersen/Rititi_ratata_il_parait_qu_elles_aiment_.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Rititi, ratata (il paraît qu'elles aiment)}
-  [by=Thomas Fersen,cov=Piece-montee-des-grands-jours,album=Pièce montée des grands jours]
+  [by=Thomas Fersen,cov=piece-montee-des-grands-jours,album=Pièce montée des grands jours]
 
   \cover
   \gtab{E{\flt}m}{6:X02210}
diff --git a/songs/Thomas_Fersen/Zaza.sg b/songs/Thomas_Fersen/Zaza.sg
index 3b6e82b7..b512dc7e 100644
--- a/songs/Thomas_Fersen/Zaza.sg
+++ b/songs/Thomas_Fersen/Zaza.sg
@@ -1,7 +1,7 @@
 \selectlanguage{french}
 \songcolumns{2}
 \beginsong{Zaza}
-  [by=Thomas Fersen,album=Le pavillon des fous,cov=Le-pavillon-des-fous]
+  [by=Thomas Fersen,album=Le pavillon des fous,cov=le-pavillon-des-fous]
 
   \cover
   \gtab{Em}{022000}
diff --git a/songs/Thomas_Fersen/Je-suis-au-paradis.jpg b/songs/Thomas_Fersen/je-suis-au-paradis.jpg
similarity index 100%
rename from songs/Thomas_Fersen/Je-suis-au-paradis.jpg
rename to songs/Thomas_Fersen/je-suis-au-paradis.jpg
diff --git a/songs/Thomas_Fersen/Le-jour-du-poisson.jpg b/songs/Thomas_Fersen/le-jour-du-poisson.jpg
similarity index 100%
rename from songs/Thomas_Fersen/Le-jour-du-poisson.jpg
rename to songs/Thomas_Fersen/le-jour-du-poisson.jpg
diff --git a/songs/Thomas_Fersen/Le-pavillon-des-fous.jpg b/songs/Thomas_Fersen/le-pavillon-des-fous.jpg
similarity index 100%
rename from songs/Thomas_Fersen/Le-pavillon-des-fous.jpg
rename to songs/Thomas_Fersen/le-pavillon-des-fous.jpg
diff --git a/songs/Thomas_Fersen/Les-ronds-de-carotte.jpg b/songs/Thomas_Fersen/les-ronds-de-carotte.jpg
similarity index 100%
rename from songs/Thomas_Fersen/Les-ronds-de-carotte.jpg
rename to songs/Thomas_Fersen/les-ronds-de-carotte.jpg
diff --git a/songs/Thomas_Fersen/Piece-montee-des-grands-jours.jpg b/songs/Thomas_Fersen/piece-montee-des-grands-jours.jpg
similarity index 100%
rename from songs/Thomas_Fersen/Piece-montee-des-grands-jours.jpg
rename to songs/Thomas_Fersen/piece-montee-des-grands-jours.jpg
diff --git a/songs/Thomas_Fersen/Qu4tre.jpg b/songs/Thomas_Fersen/qu4tre.jpg
similarity index 100%
rename from songs/Thomas_Fersen/Qu4tre.jpg
rename to songs/Thomas_Fersen/qu4tre.jpg
diff --git a/songs/Thomas_Fersen/Tot-ou-tard.jpg b/songs/Thomas_Fersen/tot-ou-tard.jpg
similarity index 100%
rename from songs/Thomas_Fersen/Tot-ou-tard.jpg
rename to songs/Thomas_Fersen/tot-ou-tard.jpg
diff --git a/songs/Thomas_Fersen/Trois-petits-tours.jpg b/songs/Thomas_Fersen/trois-petits-tours.jpg
similarity index 100%
rename from songs/Thomas_Fersen/Trois-petits-tours.jpg
rename to songs/Thomas_Fersen/trois-petits-tours.jpg