i dont know if institut f=FCr feinmotorik have been mentioned - > they use up to 8 'empty' record players (and no other 'instruments') > prepared with household materials like paper, sellotape, elastic and > modified cds to produce music http://www.khm.de/%7Eflw/feinmotorik/ - http://itb.biologie.hu-berlin.de/~beirer/feinmotorik/ - stephan ------------------------------