The first five singers perform in the opening round of the competition, including some of the most demanding arias from across the opera repertoire.
Renowned vocal coach Mary King is on hand to cast a critical ear over singers from Spain, Greece, Russia, Ireland and Italy as they make their bid for a place in the final. Presented by Petroc Trelawny. More at the same time tomorrow. Radio 3's coverage continues tomorrow at 1pm and throughout the week