Alternativchords mit Klammern

chord_settings.ly

@@ -38,6 +38,32 @@ shiftChords = #(define-music-function (parser location xshift chords) (number? l
 	$chords
 #})
 
+altChord = #(define-music-function (parser location mainchord altchord) (ly:music? ly:music?)
+(define (chord-namer in-pitches bass inversion context)
+#{
+  \markup {
+    \translate #'(-0.5 . 0)
+    \score {
+      \chords { #mainchord \klamm #altchord }
+      \layout {
+        \LAYOUT
+        \context {
+          \ChordNames
+          \override ChordName.extra-spacing-width = #'(0 . 0.3)
+        }
+        \context {
+          \Score
+          \override SpacingSpanner.spacing-increment = 0
+        }
+      }
+    }
+  }
+#})
+#{
+  \once \set chordNameFunction = #chord-namer
+	#mainchord
+#})
+
 % kleine Mollakkorde und Alteration ausgeschrieben
 #(define (note-name->german-markup-nosym pitch lowercase?)
    (define (pitch-alteration-semitones pitch) (inexact->exact (round (* (ly:pitch-alteration pitch) 2))))