Shazam - Shazam is a mobile app that recognizes music and TV around you.
Spotify - Map shows when two people play same song at same time
SoundHound - SoundHound - the most immersive music search, discovery and play experience on mobile.
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
Musixmatch - - World’s Largest Lyrics catalog and official
SoundCloud - Enjoy music & follow favourite artists