Block-Chain Powered Music Platforms - a few online but only 
"Musicoin's artist figures have increased by 166% in less than 3 months with 4,000 verified artists currently. At this rate, it is possible to predict that verified artist number will exceed 100,000 by the end of 2018 which will increase exposure."
source: https://steemit.com/music/@ox17futuremusic/3-reasons-why-musicoin-will-dominate-for-the-next-100-years-plus
The rest in this short list appear to be at ICO stage with no viable user experience at this time. Investment and time will tell over the near future which block-chain powered music platforms will prevail with value added experience for the music fan.
https://musicoin.org (beta live)
https://www.voise.com/ (signup for beta)
https://www.choon.co/ (signup for beta)
http://www.bittunes.com/ (signup for beta)
