Spotify - Map shows when two people play same song at same time
AIVA - The AI composing emotional soundtrack music
SoundCloud - Enjoy music & follow favourite artists
Abundant Music - Generate royalty free music with a simple but very powerful procedural music creator
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
WaveBots Editor - Procedural music and sound maker that exports to Wav, MIDI, GoatTracker and much more.