There is little to disagree about in the notion that a good voice, whether in opera or rock music, is one which moves its audience and brings a sense of release and (1. FULFIL) ___ to the singer. But contemporary pop and rock music have come about due to (2. SUBSTANCE) ___ advances in technology. Here, the impact of the microphone should not be (3. ESTIMATE) ___, as it has enabled the (4. MAGNIFY) ______ of quiet, intimate sounds. This, in turn, allows the singer to experiment with the emphasis on mood rather than on strict (5. ADHERE) ___ to proper breathing and voice control. Donna Soto - Morettin, a rock and jazz vocal trainer, feels that (6. ANATOMY) ___ reasons may account for the raspy sound produced by certain rock singers. Her (7. SUSPECT) ___ is that swollen vocal chords, which do not close properly, may allow singers to produce deeper notes. She does not, however, regard this as detracting (8. NOTICABLE) ___ from the value of the sound produced. Singing, she maintains, has an almost (9. SEDUCE) ___ quality and so our response to it has more (10. SIGNIFY) ___ than its technical qualities.