The Mothers of Invention
Hunt was eventually replaced by Frank Zappa, and the group evolved into the Mothers of Invention. Ray was the lead vocalist on most songs for their early albums, including "Freak Out!", "Absolutely Free", "Cruising with Ruben &amp; the Jets" and "Uncle Meat". He additionally provided harmonica on "Freak Out!". In 1968 Ray quit The Mothers of Invention and was replaced by Lowell George, but continued to contribute to other Zappa projects through the mid-1970s.