As BBC Cardiff Singer of the World marks its 20th edition, young opera singer from across the globe are in the Welsh capital hoping to make their name and join an illustrious list of previous winners.With a record number of applications this time, the standard of the singers competing in Cardiff is extremely high. Three places in the grand final have already been decided and they will be joined by tonight’s winner. At the end of the programme, we also find out who the judges have chosen as their wildcard selection to complete the line-up.

Petroc Trelawny presents full coverage of the fourth round from St David’s Hall in Cardiff with singers from Kosovo, Madagascar, England and Iceland performing music by Britten, Mozart, Gounod and Haydn. Show less