In the first 48 hours after it launched, more than one million users had opened accounts on Ping.
Ping, a social networking service built into Apple iTunes, was introduced last week, along with several other new and updated products.
Tim Halperin, a May 2010 TCU graduate, said he has used social networking sites to promote his music. His songs are available for download on iTunes, however, he is not considered an artist on Ping.