What are some alternatives?
When comparing SoundHound and WatZatSong, you can also consider the following products
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
Shazam - Shazam is a mobile app that recognizes music and TV around you.
Serendipity by Spotify - Map shows when two people play same song at same time
Musixmatch - - World’s Largest Lyrics catalog and official
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
Midomi - midomi.com find and discover music and people.