 The new group consisted of guitar, bass, drums and keys, though certain lineup changes featured two guitarists and no keys.The Power Trio performed an average of 200 dates per year, and have released twelve albums to date.In 1987, John Fogerty of Creedence Clearwater Revival undertook his own ethnomusicologist mission by traveling through the South and Midwestern United States to discover regional acts that could not be heard on radio.