Presented by Christopher Cook live from the Royal Albert Hall, London, the first instalment of the Proms Ring cycle.
Antonio Pappano conducts a performance of the new Covent Garden production of Wagner's Die Walküre.
Siegmund and Sieglinde are unaware that they are brother and sister when they fall passionately in love.
The god Wotan determines to uphold the law and defend Sieglinde's husband, but his warrior daughter Brünnhilde defies him.
As punishment, she is sentenced to become a mortal woman.
She must sleep, surrounded by fire, until a man can awaken her.
Siegmund....Placido Domingo (tenor)
Sieglinde....Waltraud Meier (mezzo-soprano)
Hunding....Eric Halfvarson (bass)
Wotan....Bryn Terfel (baritone)
Brünnhilde....Lisa Gasteen (soprano)
Fricka....Rosalind Plowright (mezzo-soprano)
Gerhilde....Geraldine McGreevy (soprano)
Ortlinde....Elaine McKrill (soprano)
Waltraute....Claire Powell (mezzo-soprano)
Schwertleite....Rebecca de Pont Davies (mezzo-soprano)
Helmwige....Irene Theorin (soprano)
Siegrune....Sarah Castle (mezzo-soprano)
Grimgerde....Clare Shearer (mezzo-soprano)
Rossweisse....Elizabeth Sikora (mezzo-soprano)
Orchestra of the Royal Opera House
Antonio Pappano (conductor)
Continues at 6.35pm after Twenty Minutes