BACK WHERE IT ALL BEGAN: David Somerville sings with The Diamonds, a doo-wop music group that was

BACK WHERE IT ALL BEGAN: David Somerville sings with The Diamonds, a doo-wop music group that was discovered by a Cleveland radio personality. Somerville and The Diamonds will return to the city to perform in the "Rendezvous on Euclid Avenue" concert Saturday night in State Theatre.