diff --git a/basic_format_and_style_settings.ly b/basic_format_and_style_settings.ly
index 4cd80ef..5545af6 100644
--- a/basic_format_and_style_settings.ly
+++ b/basic_format_and_style_settings.ly
@@ -8,15 +8,9 @@
 #(set-default-paper-size songFormatAndSize)
 #(set-global-staff-size globalSize)
 
-#(define (default-pango size)
-  (make-pango-font-tree
-    songChordFont
-    songLyricFont
-    "Luxi Mono"
-    (/ size 20)))
-
 \paper {
-  #(define fonts (default-pango globalSize))
+  property-defaults.fonts.serif = \songChordFont
+  property-defaults.fonts.sans = \songLyricFont
   %annotate-spacing = ##t
   % spacing stuff
   lyric-size = #lyricSize
diff --git a/book_include.ly b/book_include.ly
index 1c5a1ce..9fc7733 100644
--- a/book_include.ly
+++ b/book_include.ly
@@ -217,16 +217,16 @@ songs =
 %%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Include Images once and reference them:
 #(define bbox-regexp
-  (make-regexp "%%BoundingBox:[ \t]+([0-9-]+)[ \t]+([0-9-]+)[ \t]+([0-9-]+)[ \t]+([0-9-]+)"))
+  (ly:make-regex "%%BoundingBox:[ \t]+([0-9-]+)[ \t]+([0-9-]+)[ \t]+([0-9-]+)[ \t]+([0-9-]+)"))
 
 #(define (get-postscript-bbox string)
   "Extract the bbox from STRING, or return #f if not present."
   (let*
-      ((match (regexp-exec bbox-regexp string)))
+      ((match (ly:regex-exec bbox-regexp string)))
 
     (if match
         (map (lambda (x)
-               (string->number (match:substring match x)))
+               (string->number (ly:regex-match-substring match x)))
              (cdr (iota 5)))
 
         #f)))
diff --git a/chord_settings.ly b/chord_settings.ly
index c6d606b..befee4f 100644
--- a/chord_settings.ly
+++ b/chord_settings.ly
@@ -65,7 +65,7 @@ generalLayout = \layout {
     \semiGermanChords
     \override ChordName.font-size = \songScoreChordFontSize
     \override ChordName.font-series = \songChordFontSeries
-    \override ChordName.font-family = #'roman
+    \override ChordName.font-family = #'sans
     chordNameLowercaseMinor = ##t
     chordChanges = ##t
     % eigenen chordRootNamer damit F# = Fis und Gb = Ges (also alteration ausgeschrieben)
diff --git a/verses_with_chords.ly b/verses_with_chords.ly
index 957ecee..afc9a1b 100644
--- a/verses_with_chords.ly
+++ b/verses_with_chords.ly
@@ -1,18 +1,13 @@
-% guile regular expressions aktivieren:
-#(use-modules (ice-9 regex))
-
 % parsing line by line
 #(define-markup-command (wrap-newline layout props text) (string?)
    "Text Zeile für Zeile parsen"
    (interpret-markup layout props
      #{ \markup { \column {
-     $(let ((verse-markup-string (string-append "\\line { "
-            (regexp-substitute/global #f "\n"
-               text
-             'pre " } \\line { " 'post )
+     $(let ((verse-markup-string (
+        string-append "\\line { "
+          (ly:regex-replace (ly:make-regex "\n") text " } \\line { ")
           " \\size-box-to-box ##f ##t \"\" \"Agj\" }" )))
-       ;(ly:parse-string-expression (if (< (list-ref (ly:version) 1) 19) (ly:parser-clone parser) (ly:parser-clone)) verse-markup-string))
-       (if (< (list-ref (ly:version) 1) 19) (ly:parser-include-string parser verse-markup-string) (ly:parser-include-string verse-markup-string)))
+       (ly:parser-include-string verse-markup-string))
      }}#}
    )
 )
@@ -116,10 +111,10 @@
    (interpret-markup layout props
      (markup #:override `(baseline-skip . ,songTextLineHeigth) #:anchor-x-between #:stanza stanza
        (make-wrap-newline-markup
-               (regexp-substitute/global #f "\\(( *)([^,()]*)( *),([^)]*)\\)"
-                 (regexp-substitute/global #f "(([^ \n]*\\([^()]*\\)[^ \n]*)+)" verse
-                                         'pre " \\concat { " 1 " } " 'post)
-                'pre "\\textup \\line { \"" 1 "\" " 2 " \"" 3 "\" } \\score { \\transposable " transp " \\chords { s4 " 4 " } \\layout { \\verseChordLayout } }" 'post))
+               (ly:regex-replace (ly:make-regex "\\(( *)([^,()]*)( *),([^)]*)\\)")
+                 (ly:regex-replace (ly:make-regex "((?:[^ \n]*\\([^()]*,[^()]+\\)[^ \n(]*)+)") verse " \\concat { " 1 " } ")
+                "\\textup \\line { \"" 1 "\" " 2 " \"" 3 "\" } \\score { \\transposable " transp " \\chords { s4 " 4 " } \\layout { \\verseChordLayout } }")
+                )
      ))))
 
 % Kompletter Vers aus dem Akkorde entfernt werden
@@ -127,7 +122,7 @@
    "Vers ohne Akkorde"
    (interpret-markup layout props
      (markup #:override '(baseline-skip . 3.0) #:anchor-x-between #:stanza stanza
-           #:wrap-newline (regexp-substitute/global #f "\\(([^,]*),([^)]*)\\)" verse 'pre 1 'post )
+           #:wrap-newline (ly:regex-replace (ly:make-regex "\\(([^,]*),([^)]*)\\)") verse 1)
      )
    )
 )