((number-pair? '(0 . 8)) ly:music? ly:music?)
(_i "Take the music in @var{part1} and @var{part2} and return
a music expression containing simultaneous voices, where @var{part1}
and @var{part2} are combined into one voice where appropriate.
Optional @var{chord-range} sets the distance in steps between notes
that may be combined into a chord or unison.")
((number-pair? '(0 . 8)) ly:music? ly:music?)
(_i "Take the music in @var{part1} and @var{part2} and return
a music expression containing simultaneous voices, where @var{part1}
and @var{part2} are combined into one voice where appropriate.
Optional @var{chord-range} sets the distance in steps between notes
that may be combined into a chord or unison.")