modify page margins and lilypond sizes

crepbook.cls

@@ -227,13 +227,14 @@
 % Customization of the page appearance
 %
 \RequirePackage[
-  a4paper % paper size
+  a5paper % paper size
   ,includeheadfoot % include header and footer into text size
   ,hmarginratio=1:1 % ratio between inner and outer margin (default)
-  ,outer=1.8cm % outer margin (right)
+  ,outer=0.5cm % outer margin (right)
   ,vmarginratio=1:1 % ratio between top and bottom margin
-  ,bmargin=1.3cm % bottom margin
-% ,bindingoffset=1.7cm % space reserved to bound pages together
+  ,bmargin=0.5cm % bottom margin
+  ,bindingoffset=1.7cm % space reserved to bound pages together
+  ,twoside
   ]{geometry}
 
 % Paragraph indentation space

lilypond/header

@@ -14,9 +14,9 @@
   indent = 0\cm
   between-system-padding = 1\mm
 
-  paper-width = 7.5\cm
-  line-width = 7\cm
+  paper-width = 9\cm
+  line-width = 8.5\cm
   paper-height = 1.6\cm
 }
 
-#(set-global-staff-size 12)
+#(set-global-staff-size 14)