I use Google Play Music. I've uploaded all I can of my own stuff, 10k songs, and use the free streaming of my stuff only or a mix. Quite a lot less ads than other streaming services. The suggestions seem better for my moods and things too. "I'm feeling lucky" mix is wickedly on point most of the time. I'll prolly buy in to unlimited at some point, then zero ads and any of their songs any time.
Today, Imagine Dragons' "Believer" is totally stuck in my head, from Pound class as the first song.