[Haskell] hbeat: a rhythm sequencer

[Tim Docker]

I've just uploaded to hackage a step-based music sequencer, called  
"hbeat". It's little more than a toy, but it's fun. It ought to be  
cross platform, though has been built and tested solely on linux.

Given that it's only 400 or so lines, it may be a useful example for  
anyone wanting to combine OpenGL graphics, interaction, and sound via  
the SDL libraries. It's also interesting that more than half of the  
code is "pure" (ie outside the IO monad), despite the fact that this  
is a stateful app with real time interaction with the real world.

Further details here:

     http://dockerz.net/software/hbeat.html

Thanks to lemmih for the SDL bindings that made this possible.

Tim