Tenor Placido Domingo makes his long-awaited Proms debut in the Royal Opera House's new production of Wagner's epic Die Walkure, the second opera in the Ring cycle. The cast also includes baritone Bryn Terfel as Wotan and soprano Lisa Gasteen as Brunnhilde. Antonio Pappano conducts the Royal Opera House Orchestra. Charles Hazlewood introduces the first of this year's Proms from London's Royal Albert Hall.