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