In 1960, Britten revised the score into a two-act version, in preparation for a BBC broadcast. Vere's first appearance after the prologue had been originally the Captain's Muster, in which he addresses the crew at the end of Act 1; Britten cut this, explaining to his librettist Eric Crozier that he had never been happy with that scene, so making Vere's first appearance on the ship a private moment alone in his cabin. Britten changed some of the structural balance from the contrasting Acts 3 and 4. The first performance of the revised two-act version was on 9 January 1964 at the Royal Opera House, Covent Garden, conducted by Georg Solti, The 1966 BBC Television broadcast was conducted by Charles Mackerras, with Peter Glossop (baritone) as Billy, Peter Pears as Vere, and Michael Langdon as Claggart. The 1967 Decca studio recording was made of the two-act version; the recording sessions were attended by staff from the Royal Opera House, Covent Garden.