John Sebastian has had a varied career as a singer, songwriter, and musician. As the leader of the folk-rock band the Lovin' Spoonful, he was responsible for a string of Top Ten hits in 1965-1967 that included the chart-toppers "Daydream" and "Summer in the City," and he returned to number one in 1976 as a solo artist with "Welcome Back." He wrote or co-wrote those hits as well as many others, along with songs used on Broadway and in the movies. And as an instrumentalist, primarily playing harmonica, he has accompanied a wide range of artists including Judy Collins, Crosby, St...