London - Pete Townshend, guitarist for U.K. rock legends The Who, has unveiled software that lets users automatically create personalized music tracks online, Reuters reported. The Lifehouse Method, developed by Lawrence Bell and Dave Snowdon, automatically generates instrumental tracks based on user-provided voice recordings, digital images and rhythms clapped into a microphone. "You can put data in and get a piece of music out. It's as simple as that," Townshend told Reuters.