-#(ly:set-option 'old-relative)
-\version "2.1.7"
+\version "2.3.4"
\header {
texidoc = "Note heads in collisions should be merged if
they have the same positions in the extreme note heads.
\score {
-\notes \relative c'' {
+ \relative c'' {
c4
<< { c4 d4 <c d>8 <c d> <c d> } \\ { c4 c <a b>8 <b c> <c d>8 } >>
}