“They often call me Speedo but my real name is Mr. Earl” is the way to describe Earl Carroll, lead singer of the Cadillacs, which is one of Rock N Roll’s greatest Doo Wop groups. Their big hit,“Speedo,” which is worth up to $75.00 today, is on their 1957 album, “The Fabulous Cadillacs.” If you have or find a copy of the album on Jubilee Records and the record label is black it’s worth up to $200.00. If the record label is blue it can get you $500.00 today.