John Benson Sebastian (born March 17, 1944) is an American singer-songwriter, guitarist, harmonicist, and autoharpist, who is best known as a founder of The Lovin' Spoonful, a band inducted into the Rock and Roll Hall of Fame in 2000; for his impromptu appearance at the Woodstock festival in 1969; and for his No. 1 hit in 1976, "Welcome Back".

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