Maybe it is a marketing problem. The domain name is nice, but what does it tell about you, about your product, about people sharing the url ? For you it was probably a matter of being zillionears but for music lovers ? The dynamic pricing thing looks also fishy in the sense that no one except you are in control of pricing, or its algorithm. This gives the feeling to be exposed to be screwed, the artists and the potential buyers.

My feeling is that you conceived the startup guided mainly by your desires than the one of the artists, visitors and clients. Unfortunately your desires where not attractive for them.

Mistake n° 1 is the domain name which is the first message you give about your business and service.