diff --git a/songs/La_Rue_Ketanou/ou_je_vais.sg b/songs/la_rue_ketanou/ou_je_vais.sg
similarity index 100%
rename from songs/La_Rue_Ketanou/ou_je_vais.sg
rename to songs/la_rue_ketanou/ou_je_vais.sg
diff --git a/songs/Les_Ogres_de_Barback/le_voyageur.sg b/songs/les_ogres_de_barback/le_voyageur.sg
similarity index 100%
rename from songs/Les_Ogres_de_Barback/le_voyageur.sg
rename to songs/les_ogres_de_barback/le_voyageur.sg
diff --git a/songs/Manu_Chao/bongo_bong.sg b/songs/manu_chao/bongo_bong.sg
similarity index 100%
rename from songs/Manu_Chao/bongo_bong.sg
rename to songs/manu_chao/bongo_bong.sg
diff --git a/songs/Manu_Chao/je_ne_t_aime_plus.sg b/songs/manu_chao/je_ne_t_aime_plus.sg
similarity index 100%
rename from songs/Manu_Chao/je_ne_t_aime_plus.sg
rename to songs/manu_chao/je_ne_t_aime_plus.sg
diff --git a/songs/Renaud/morgane_de_toi.sg b/songs/renaud/morgane_de_toi.sg
similarity index 100%
rename from songs/Renaud/morgane_de_toi.sg
rename to songs/renaud/morgane_de_toi.sg