SIR Tom Jones has hailed fellow Welsh singer Charlotte Church for making the difficult transition from classical music to pop. The veteran crooner credits CRAZY CHICK hitmaker Church, 20, for teaching her classically-trained vocal chords to take on a completely different style of singing. He says, "I didn't think she'd be able to sing rock music because if you are classically trained you use your voice in a different way. "But she's done it and I think she's great."