Shazam, founded in 1999 by Berkeley students, evolved from a UK service into a global music identification app, leveraging partnerships for database growth and expansion across platforms. Utilizing acoustic fingerprints, Shazam can identify songs from various audio sources, and as of 2012, it houses a database of over 11 million songs. Its services cater to different user needs, including free tagging, recommendations, and contributions to HIV/AIDS programs in Africa.