Can classical singing 'be' mainstream? Il Divo help you to decide!

Tonight we're taking a look at Il Divo performing 'Time to Say Goodbye'! Original Video -    • IL Divo ~ Live in Hyde Park ~ Full Concert...   TIME STAMPS - 0:00 Start 0:12 Introduction 0:39 Performance 4:15 Analysis Start 7:09 Synchronisation 10:06 Individual Voices 15:54 Carlos's Technique