Shazam - Shazam is a mobile app that recognizes music and TV around you.
SoundHound - SoundHound - the most immersive music search, discovery and play experience on mobile.
Musixmatch - - World’s Largest Lyrics catalog and official
Midomi - midomi.com find and discover music and people.
WhoSampled - WhoSampled, the service that identifies music samples
WatZatSong - WatZatSong is a community of music enthusiasts who can identify most songs and tracks.