Chicano girl group the Sisters teamed East Los Angeles siblings Rosella, Ersi, and Mary Arvizu. Discovered by producer Billy Cardenas, the trio signed to Del-Fi Records; their debut session, recorded at the famed GoldStar studios with future Love members Arthur Lee and John Echols among the session players, generated a fine 1964 rendition of the oft-covered Gee Baby Gee; the follow-up, the Sisters' take on the Jessie Hill classic Ooh Poo Pah Doo, featured Ersi on lead (Rosella typically assumed the helm), but like its predecessor failed to catch on at radio. The group's final single, 1965's Sam Cooke cover I Love You (For Sentimental Reasons), was also the last official Del-Fi release; although the Sisters soon disbanded, Ersi eventually scored a belated chart hit as a member of the Latino rock combo El Chicano, whose instrumental Viva Tirado cracked the pop Top 30 in the spring of 1970. ~ Jason Ankeny, Rovi