Musixmatch - - World’s Largest Lyrics catalog and official
Shazam - Shazam is a mobile app that recognizes music and TV around you.
Musixmatch 4 Apple Watch - Lyrics on your wirst
SoundHound - SoundHound - the most immersive music search, discovery and play experience on mobile.
Lyrics Training - A game where you fill in the lyrics of your favorite songs
Midomi - midomi.com find and discover music and people.