diff --git a/chords_serifjazz.m4.xml b/chords_serifjazz.m4.xml
index 2711e40..1b497fa 100644
--- a/chords_serifjazz.m4.xml
+++ b/chords_serifjazz.m4.xml
@@ -1,3 +1,4 @@
+m4_changecom()m4_dnl
*
- m:-1.0:0;
+ m:-1.0:0
@@ -364,6 +365,11 @@ m4_ifdef(`CHORD_FORMS', `
SYM_MI m:0:-⊃ s( SYM_MA s7 s) m:0:⊃
+
+ m6maj7
+ SYM_MI m:0:-⊃ s6 s( SYM_MA s7 s) m:0:⊃
+
+
m9maj7
SYM_MI m:0:-⊃ s9 s( SYM_MA s7 s) m:0:⊃
@@ -379,6 +385,11 @@ m4_ifdef(`CHORD_FORMS', `
+ m:0:-⊃ s9 s( SYM_MA s7 s) m:0:⊃
+
+ omaj7
+ m:0:&unsup; degree m:-1.0:-&unsup; m:0:-⊃ s( SYM_MA s7 s) m:0:⊃
+
+
mb5
SYM_MI m:0:-⊃ s( sb s5 s) m:0:⊃
@@ -419,15 +430,26 @@ m4_ifdef(`CHORD_FORMS', `
m:0:-⊃ s7 s( s# s9 s) m:0:⊃
-m4_define(`LTB2', ``m:1:5.5 :push m:0:-11 st( :pop :push m:0:-5 sm( :pop sb('')
-m4_define(`RTB2', ``:push m:0:-11 st) :pop :push m:0:-5 sm) :pop sb) m:0:-5.5'')
-m4_define(`SUP2', ``:push m:0:-11 $1 :pop'')
+
+m4_define(`LTB2', ``m:1:5 :push m:0:-10 st( :pop :push m:0:-5 sm( :pop sb('')
+m4_define(`RTB2', ``:push m:0:-10 st) :pop :push m:0:-5 sm) :pop sb) m:0:-5'')
+m4_define(`SUP2', ``:push m:0:-10 $1 :pop'')
+
+
+ b9#5
+ m:0:-⊃ LTB2 SUP2(`sb s9') s# s5 RTB2 m:0:⊃
+
7#9b5
m:0:-⊃ s7 LTB2 SUP2(`s# s9') sb s5 RTB2 m:0:⊃
+
+ 7b9#5
+ m:0:-⊃ s7 LTB2 SUP2(`sb s9') s# s5 RTB2 m:0:⊃
+
+
7b9b5
m:0:-⊃ s7 LTB2 SUP2(`sb s9') sb s5 RTB2 m:0:⊃
@@ -458,6 +480,11 @@ m4_define(`SUP2', ``:push m:0:-11 $1 :pop'')
SYM_MI m:0:-⊃ s9 s( s# s1 s1 s) m:0:⊃
+
+ 7b13b9
+ m:0:-⊃ s7 LTB2 SUP2(`sb s1 s3') m:2:0 sb s9 m:2:0 RTB2 m:0:⊃
+
+
7#11b9
m:0:-⊃ s7 LTB2 SUP2(`s# s1 s1') m:2:0 sb s9 m:2:0 RTB2 m:0:⊃