Re: Strumming rhythm for chord progression

[Robin Bannister]

Christian Henning wrote:
> I'm struggling with sus4 chords.
> ...
> unexpected STRING    sus4


This is notemode complaining.  
It is the default input mode:
http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Input-modes 


sus4 is meant only for chord mode. 
But note mode is digesting your music in the \improvisationOn part. 

If you stay with (the implicit) note mode in the \improvisationOn part, 
you need to remove all modifiers like  :sus4 

But maybe you are trying to keep the music exactly the same, 
e.g. you want to use a music variable. 
In that case you could specify chord mode here too.   
That turns out badly because \improvisationOn expects single notes. 


Cheers, 
Robin