Seompi (an acronym for "Self Expression On Musically Potential Instruments") came together as a unit in 1970 in McAllen, Texas, formed by former Headstones and the Meat frontman and bassist Dave Williams, who had just finished a one year stint in Texas state prison on a marijuana possession charge. He rounded up bassist Patrick Rockhill and drummer Bill Reid for a peculiar dual-bass, no-guitar sound. Seompi cut and released their first 45, "Summer's Comin' On Heavy," with that dual-bass attack intact. Read more on Last.fm