Spotify - Map shows when two people play same song at same time
TunesArt - TunesArt is the perfect companion for iTunes and Spotify on macOS: display an album cover on your desktop, download lyrics, quickly search your music library, share on Last.fm and Twitter, and control your player...
SoundCloud - Enjoy music & follow favourite artists
Audiorealm.com - AudioRealm is your destination for thousands of radio stations from all over the globe.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.