Over last few years they have done for the music industry much more than anyone else in the business. Yet avoiding a huge buzz that the other players generate (like Spotify, Pandora, Apple, etc.).
* They seem to be the only profitable company in the online music business,
* They pay directly to the content owners (artists and labels) avoiding stupid useless institutions like RIAA and SoundExchange,
* They don't raise hundreds of millions just to squander them on advertisement,
* They are actually helping increase the income for indies,
* They provided tools to anyone to easily sell their music and merch,
* And it's still just a couple of dozen people working there.
This company is kind of the ideal example that every single startup should follow, I believe. Instead of infinite noise and funding rounds keeping unprofitable for years, they just did the job and continue to grow.
Kudos!