Birtha were one of the first US all-female bands to attempt to penetrate the exclusively male bastion of heavy rock. Comprising Rosemary Butler (bass, vocals), Sherry Hagler (keyboards), Liver Favela (drums) and Shele Pinizzotto (guitar, vocals), they released two excellent hard rock albums during the early 70s. They specialized in tight harmonies and performed in a style similar to that of early Uriah Heep, but were, perhaps unjustly, regarded as a novelty at the time. Their tasteless publicity handout during their early 70s UK tour with the Kinks, stating ‘Birtha has balls’, doubtless did little to alter this image. Along with Fanny, they helped to pave the way for future female rockers such as the Runaways.