Have an Arduino attached to the hub via a serial port. Send the orchestra configuration over it.
The Arduino will process the orchestra pattern and activate a series of 4 solenoids that act as the notes on an instrument. Or 8 if it is two player!
The player can then attach the solenoid to any surface to create different sounds.
Inspiration: https://github.com/mcqn/RFIDrum/blob/master/RFIDrum.ino
http://uk.farnell.com/jsp/displayProduct.jsp?sku=9591664&CMP=KNC-GUK-FUK-GEN-LISTINGS&gross_price=true&mckv=8xfSXgBz|pcrid|23407365549|plid|