\version "2.13.59"
MyNotes= \relative c''{
<< %Playing these ditones in one voice no issues here
{<d b> <b g> <c a> r}
>>
<<
{d b c r|}\\ %MIDI doesn't strike "b" note of first voice
{b g a r|}
>>
<<
{d s c r|}\\ %Omitted the note to prove MIDI sounds same as above
{b g a r|}
>>
<<
{d b c r|}\\
{b g a r|}\\
{\hideNotes %WORKAROUND:
s b s s|}>> %Adding a hidden 3rd voice with just the missing note to force lilypond's
} %MIDI output to strike the missing "b" note....why is this necessary?
\score{
\MyNotes
\layout {}
\midi{}
}
%Javier Ruiz