[1937]
Programme for Auden/Isherwood's play The ascent of F6 at the Mercury Theatre, for which Britten composed the music. Hedli Anderson appeared as 'The Singer' in this production, and Brian Easdale was the Musical Director.
The programme gives no indication as to the date, but photographs elsewhere in the collection confirm the production took place in 1937.
1 item
Archive
https://www.bpacatalogue.org/archive/PG-1937-0226