Every era has a beginning and an end.
It's A Natural Records in 1948. Not everyone will agree of course, but I really think that is a logical starting point for the recognized style of music we are referring to. This took place in the year 1961 when for all practical purposes, the vocal group style had run its course and new forms of music were beginning to take over the radio and sales charts for a new generation - sweet sounding girl groups, Spector, Motown, the folkies, California surf and hot rods, and the emerging sound of soul music from New York, Memphis, and Muscle Shoals. And-strange stuff from Liverpool, England was about to explode changing the face of American music. But during the summer of 1961, we came to realize the last great days of the Doo Wop Era in the sounds of The Jive Five, Dreamlovers, and Bluejays.