There is little to disagree about in the notion that a good voice, whether in opera or rock music, is one that moves its audience and brings a sense of release and fulfilment to the singer.

There is little to disagree about in the notion that a good voice, whether in opera or rock music, is one that moves its audience and brings a sense of release and fulfilment to the singer. But contemporary pop and rock music have come about due to (1. SUBSTANCE) advances in technology.