Cover of John Sebastian’s „Welcome Back Kotter“ Mai 6, 2016 Cover, Cover Classic Rock, Cover John Sebastian, Cover Rock, Cover Welcome Back, King Biscuit Flower Hour, Life and Times 1964-1999, Cover of John Sebastian’s Welcome Back Kotter theme song sung by Rodney Gast. Like 0 Thanks! You've already liked this « John Sebastian Cover: Darlin‘ Be Home Soon » Clem Snide – Welcome Back (John Sebastian cover)