The Street Performer Protocol (Score 1)

My summary of the artist's situation is that the audience is too sparse and distributed to make money with live performances, but is large enough to support him if he can get them to pay for the music. The Street Performer Protocol (J. Kelsey and B. Schneier, http://www.counterpane.com/street_pe rformer.html ) seems ideal for his needs.

In this protocol, he sets up an escrow account where people pay for the next recording. When that account reaches a pre-defined amount, he releases the recording. All the released recordings act as advertising for the next one.