drums and chords at same time?

[Jannik Jeppesen]

Hi All..

I am trying to mix drums and chords, but cant make it work.
I want the chords to be played once every bar and a hh on the quarter notes 
to keep the beat.
How does this work..
My suggestion is very bad, I think...

Jannik

===============================
\version "2.6.3"

\header
{
title = "Improvise"
composer = "Jannik Jeppesen"
}

beat = \drummode { \stemUp
 \repeat unfold 20 {
   hh4 hh hh hh
 }
}

chordline = \chordmode {
 \repeat unfold 20 {
   a1:m c g e:m
 }
}

drumNotes = \new DrumStaff {
\new DrumVoice {
  \override Beam #'positions = #'(5 . 5)
  \beat
}
}

\score {
 \drumNotes
 \chordline
 \layout {}
}

\score {
 \unfoldRepeats \drumNotes
 \midi { \tempo 4 = 120 }
}
===========================