As we look forward to the final of the 2015 competition on 21 June (broadcast live on BBC4 at 19:30 BST), Andrew Clements looks at some of the competition’s finest winners and asks if 2015 will produce a star with the wattage of years past.

Watch the first winner, Karita Mattila, sing “Leise, leise” Weber‘s Der Freischütz, in the 1983 final.