NOISESUPPLY - Pandora for SoundCloud
Spotify - Map shows when two people play same song at same time
Pandora Thumbprint Radio - A hyper-personalized station based on the songs you've liked
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
Mimi.io - Clear music and sound customized by your hearing profile
SoundCloud - Enjoy music & follow favourite artists