I am the culprit who wrote the garbage concerto.  It is a piece for
percussion quintet and symphony orchestra.  The solo instruments are
made of recycled garbage (tin cans, glass jars, hub caps, plastic jars,
a metal can maraca, blowing over bottles filled with water, etc.).  It is
beautifully recorded by BIS.  The best price seems to be at www.cdnow.com.

Enjoy!

Jan Jarvlepp