maurograziani.org
Music Art Technology & other stories
Posted on 2009 by MG
If anyone needs a 12-sided die with notes on it, you can take a look here. This guy claims to have invented them and sells them in sets of 12 for only $34.95.
If you're happy with 12-sided dice with just numbers on them, just visit your local role-playing game store.
By the same author, a little more interesting is Muzoracle, presented as "a divination system based on music, utilizing cards and twelve-sided dice."