diff --git a/patacrep/songs/chordpro/data/chordpro/song b/patacrep/songs/chordpro/data/chordpro/song
index 92f474ee..d721df33 100644
--- a/patacrep/songs/chordpro/data/chordpro/song
+++ b/patacrep/songs/chordpro/data/chordpro/song
@@ -13,7 +13,7 @@
 (* endfor -*)
 
 (*- for author in authors -*)
-  {artist: (( author[1] )) (( author[0] ))}
+  {artist: (( author[1] ))(( author[0] ))}
 (* endfor *)
 
 (*- for key in ['album', 'copyright', 'cov', 'tag'] *)
diff --git a/patacrep/songs/chordpro/data/latex/song b/patacrep/songs/chordpro/data/latex/song
index 4cb04412..e3be0f83 100644
--- a/patacrep/songs/chordpro/data/latex/song
+++ b/patacrep/songs/chordpro/data/latex/song
@@ -16,7 +16,7 @@
 }[
   by={
       (* for author in authors *)
-        (( author[1] )) (( author[0] ))
+        (( author[1] ))(( author[0] ))
         (*- if not loop.last -*)
         ,
         (* endif *)
diff --git a/patacrep/songs/chordpro/test/author_names.sgc b/patacrep/songs/chordpro/test/author_names.sgc
new file mode 100644
index 00000000..a6818f7c
--- /dev/null
+++ b/patacrep/songs/chordpro/test/author_names.sgc
@@ -0,0 +1,6 @@
+{language: english}
+{title: Title}
+{artist: The Beatles}
+{artist: Oasis}
+{artist: The the beatles}
+
diff --git a/patacrep/songs/chordpro/test/author_names.source b/patacrep/songs/chordpro/test/author_names.source
new file mode 100644
index 00000000..0ffd1daa
--- /dev/null
+++ b/patacrep/songs/chordpro/test/author_names.source
@@ -0,0 +1,4 @@
+{title: Title}
+{artist: The Beatles}
+{artist: Oasis}
+{artist: The the beatles}
diff --git a/patacrep/songs/chordpro/test/author_names.tex b/patacrep/songs/chordpro/test/author_names.tex
new file mode 100644
index 00000000..123a58d3
--- /dev/null
+++ b/patacrep/songs/chordpro/test/author_names.tex
@@ -0,0 +1,12 @@
+\selectlanguage{english}
+
+\beginsong{Title}[
+  by={
+        The Beatles,
+        Oasis,
+        The the beatles  },
+]
+
+
+
+\endsong
\ No newline at end of file
diff --git a/patacrep/songs/chordpro/test/greensleeves.sgc b/patacrep/songs/chordpro/test/greensleeves.sgc
index bd0ddd71..ba6081a2 100644
--- a/patacrep/songs/chordpro/test/greensleeves.sgc
+++ b/patacrep/songs/chordpro/test/greensleeves.sgc
@@ -3,7 +3,7 @@
 {title: Greensleeves}
 {title: Un autre sous-titre}
 {title: Un sous titre}
-{artist:  Traditionnel}
+{artist: Traditionnel}
 {album: Angleterre}
 {cov: traditionnel}
 
diff --git a/patacrep/songs/chordpro/test/greensleeves.tex b/patacrep/songs/chordpro/test/greensleeves.tex
index 6a745a81..905e1664 100644
--- a/patacrep/songs/chordpro/test/greensleeves.tex
+++ b/patacrep/songs/chordpro/test/greensleeves.tex
@@ -5,7 +5,7 @@
 Un autre sous-titre\\
 Un sous titre}[
   by={
-         Traditionnel  },
+        Traditionnel  },
   album={Angleterre},
   cov={traditionnel},
 ]
diff --git a/patacrep/songs/chordpro/test/metadata.sgc b/patacrep/songs/chordpro/test/metadata.sgc
index e4bb1b21..e7b35506 100644
--- a/patacrep/songs/chordpro/test/metadata.sgc
+++ b/patacrep/songs/chordpro/test/metadata.sgc
@@ -6,8 +6,8 @@
 {title: Subtitle3}
 {title: Subtitle4}
 {title: Subtitle5}
-{artist:  Author1}
-{artist:  Author2}
+{artist: Author1}
+{artist: Author2}
 {album: Album}
 {copyright: Copyright}
 {cov: Cover}
diff --git a/patacrep/songs/chordpro/test/metadata.tex b/patacrep/songs/chordpro/test/metadata.tex
index 11004ef6..555f59d4 100644
--- a/patacrep/songs/chordpro/test/metadata.tex
+++ b/patacrep/songs/chordpro/test/metadata.tex
@@ -7,8 +7,8 @@ Subtitle3\\
 Subtitle4\\
 Subtitle5}[
   by={
-         Author1,
-         Author2  },
+        Author1,
+        Author2  },
   album={Album},
   copyright={Copyright},
   cov={Cover},