I do most of my listening on legal streaming services, but find them crap at surfacing interesting new stuff, their new release and recommendation sections are mainstream and chart oriented. Instead, I mostly monitor the pirate mp3 album RSS feeds for what sounds interesting (it probably wouldn't be ok to link to them from here).
Also, Gilles Peterson and Mary Anne Hobbs over on BBC Radio are always worth a listen for new music ideas. Gilles is excellent at surfacing new and out there non-rock music from all over the world. He was instrumental in my evolution from a strictly-rock teen into musical omnivore I am today. Back in the day Mary Anne was hosting Breezeblock (later renamed to Experimental) on BBC R1, which has expanded my music horizons considerably into more dark and experimental areas. Nowadays Mary Anne hosts a mid-morning show which is more middle-of-the-road, but she still can fish out the good stuff. And I do adore her voice and enthusiasm.