Here is a link to a video showing a musical secretary-cabinet that
is really worth looking at.  Some really ingenious tricks here:

  http://www.youtube.com/embed/MKikHxKeodA?rel=0 

Randolph Herr

 [ Roentgens' "Queen Marie Antoinette's Automaton" plays music at
 [ http://www.youtube.com/watch?feature=endscreen&NR=1&v=nITEU4fsqCU 
 [ -- Robbie