Liver was the last member to join Birtha in 1968. The group immediately started playing the club circuit and toured from California to Alaska. From 1968 to 1971 Birtha worked to tighten and refine their rock sound and in 1971 they started writing their own material, most by themselves, occasionally in partnership with other parties, including Mark Wickman and Gabriel Mekler.
Birtha signed a record contract with Dunhill Records in 1972 and recorded their first album "Birtha" with record producer Gabriel Mekler and engineers Dave Hassinger and Val Garay. After the release of their first album, Birtha began playing rock concerts and clubs throughout the U.S., Canada and Europe. While taking breaks in their home town, Los Angeles, they would often play The Whiskey and The Troubadour and frequently played a club in Glendale, CA called The Sopwith Camel.
In 1973 Birtha recorded their second album, "Can't Stop The Madness" with producer and engineer Christopher Huston. The band was on the road for more than 250 days a year and played with groups like, Fleetwood Mac, Alice Cooper, Poco, Black Oak Arkansas, Cheech and Chong, The Kinks, B.B. King, Three Dog Night, James Gang and many more.
The band broke up in 1975 and all the members went their separate ways.