Imogen Heap released a song (Tiny Humans) that was only available (at the time) for purchase with ETH in 2015. She's leading a huge push for blockchain/crypto solutions for the music industry. Incredible ramifications not just in artist compensation but data retention, contracting, and so much more.

I'd highly recommend that anyone with a bit of interest in blockchain in the music industry check out the mycelia project.

http://myceliaformusic.org/2016/05/14/imogen-heap-decentralising-the-music-industry-with-blockchain/