Charles Kindred Vassy was a singer-songwriter, who in addition to his solo recordings also recorded with other artists, most notably Kenny Rogers, Frank Zappa and Elvis Presley. In the 1960s, Vassy was a member of The Back Porch Majority. He left that group in 1969 and joined the country rock band Kenny Rogers and The First Edition. As a member of the group he recorded a top 30 album — Something's Burning — and one of his own songs "Heed The Call" became a top 40 hit in 1970. He performed lead vocal on the group's 1972 single "School Teacher". In 1973, he sang the "Yipee-Yi-Yo-Ty-Yay's" on the outro of Frank Zappa's single "Montana" from the "Over-Nite Sensation" album. Vassy left the First Edition in 1972 after The Ballad of Calico album and was replaced by Jimmy Hassell. He went on to work on both a solo career and as a session musician. In 1980, Vassy released two singles for the International Artists record label: "Do I Ever Cross Your Mind" and "Makes Me Wonder If I Ever Said Goodbye." He moved to the Liberty Records label and released seven singles on it, including Earl Thomas Conley's "When You Were Blue and I Was Green", which reached No. 21 on Hot Country Songs. From Wikipedia (https://en.wikipedia.org/wiki/Kin_Vassy) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/b...)