RAC (short for Remix Artist Collective) (but it's just 1 guy) announced that he has found a partner in UJO Music (https://ujomusic.com/) to release his album independently with Ethereum being available as a payment option. While this isn't a full integration in to the blockchain (where smart contracts would be used to divide the royalties between collaborators) this certainly is a first for a indie artist of this scale.
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I think this is a really cool step in the right direction and with all the coverage it might bring it might not be too long before the music industry starts adopting cryptocurrencies at large!