John Barbata (born 1 April 1945, in Passaic, New Jersey, U.S.) is a noted drummer active especially in pop and pop/rock bands in the 1960s and 1970s, both as a member and as a session drummer. Already an established session drummer when he joined The Turtles, he was one of the pioneering drummers who converted pop music rhythms from the down-beat rhythms of the 1950s to the off-beat rhythms that have dominated ever since. Wikipedia
The definitive Wikipedia entry for John Barbata. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/John_Barbata