Can't get chord symbols to print right

[Frank Wuest]

Hi everyone,

I just need to rearrange some sheet music, and this is the first time I need to 
incorporate chord symbols.

I tried to go about according to the documentation, but can't quite get things 
to work. Th following code:

\version "2.16.1"
\header {
title = whatever"
}
{
\key des \major
\clef bass
\time 4/4
\chords {es:m9 f:m7 ges:maj7 f:m7}
{es4 r8 f8 ges4 r8 f8}
}


gives me a bar with chord symbols below it, and another bar with notes. 


So, where's my mistake?

cheers,
Frank