\version "2.18.2"
\score {
\new DrumStaff
\new DrumVoice {
\drummode {
bd4 sn4 bd4 sn4
<<
{
\voiceOne
\repeat unfold 16 hh16
}
\new DrumVoice {
\voiceTwo
bd4 sn4 bd4 sn4
}
>>
}
}
\midi { }
\layout { }
}