Cryptocurrency is going revolutionize the way we spend money in the future. I think that Spotify should integrate other forms of cryptocurrency like; Electroneum, Reddcoin, Litecoin, or others and accept them as a form of payment for premium subscriptions or to buy singles from the artist.
Sometimes I come across a song I like, and I would tip the artist if that was a feature. I don't want to buy the song but I would tip them as if it was a preformer at a small venue.
Integrating crypto into your platform would be the one to Break ground and make something new and cool