Carlyn did a great writeup for Jameco:

http://www.jameco.com/Jameco/workshop/diy/crashspace.html?sp_rid=MTgyNDYxNDU4NDcS1&sp_mid=3540557

Store Front Music 2.0 is an interactive installation piece that translates motion into sound.  This work distills an earlier site-specific installation piece that transformed the entire storefront of CRASH Space on Venice Boulevard into a playful musical instrument.  Now movement from the the audience triggers mallet strikes on everyday objects. Just as in life, the viewer can use their behavior to create music or noise.

Mixed Media, 2011

More Resources

The SVN: http://code.google.com/p/crashspace-sfm/

Carlyn's Github: https://github.com/carlynorama/  (FancySolenoid and Button)

Updated Github: https://github.com/carlynorama/SFM 

Various Spots on Flickr: 

     http://www.flickr.com/photos/crashspacela/sets/

     http://www.flickr.com/groups/storefrontmusic/pool/with/5741674651/