Round 4 Highlights

Tim Rhys-Evans presents highlights from the final round of the world's greatest opera singing competition.

Singers from Armenia, England, Scotland, Australia and Uzbekistan compete, with a guaranteed place in the final for the winner. And drama will be high as one wildcard will be announced to complete the line-up.

Sopranos Elin Manahan Thomas and Shan Cothi will be on hand with their views on all of the performances, while Josie D'Arby follows a member of the BBC National Orchestra of Wales to find out what's involved in accompanying the singers in this competition.