Shazam - Shazam is a mobile app that recognizes music and TV around you.
KaraFun - KaraFun is the best online karaoke. Over 35,000 karaoke songs, with studio quality, at home or on the go. Regular updates. Free demo!
Musixmatch - - World’s Largest Lyrics catalog and official
Yokee - Karaoke to YouTube videos
Midomi - midomi.com find and discover music and people.
Sing! Karaoke by Smule - Karaoke with your favorite celebrity singers