This is a great idea. We need to have more services built in steem blockchain to make it more successful. Being able to buy music with steem will make it more like a currency rather than just token. The adoption will increase and steemit prices will shoot. I am planning to work on SteemQA a QA website based on steem blockchain. https://steemit.com/qa/@gokulnk/q-a-site-based-on-steem-brainstorming