Have you already tried the new Spotify? It's called Radio. There's millions of stations, catering to every possible taste. Most have few or no ad-breaks. Here's what I'm tuned-to right now: https://tunein.com/radio/WUSB-901-s23424/
Enjoy the future 😄
Wanna jazz? Here you go: https://tunein.com/radio/WBGO-HD2-883-s67400/. Very pleasant!