Viva Voce on Andrea Bocelli. How Is His Music Linked with Both the Pop and Opera Styles?

The focus question I chose for my viva was 'How is Andrea Bocelli's music linked with both pop and opera styles?'
Before I go into my analysis, I'll briefly talk about Bocelli himself. He has often been called the fourth tenor and is a blind, Tuscany-born vocalist who has emerged as one of the most exciting voices in his genre of light classical vocals. He has also made inroads into the world of opera.
Beginning piano lessons at the age of six, he later added flute and saxophone. Bocelli was born with poor eyesight and became totally blind at the age of twelve. …