Suite in Three Keys was planned by Coward as his theatrical swan song: "I would like to act once more before I fold my bedraggled wings."[1] He wrote the three plays in the expectation that Margaret Leighton would be his co-star, but she vacillated for so long about accepting the roles that he cast Lilli Palmer instead.[2] In each of the plays there are two main female parts, and Coward chose Irene Worth for the second role.[3] The only character common to all three plays, Felix, the young Italian waiter, was played by Sean Barrett.[4] The other characters, nine in all, are English, American or German guests or visitors at the hotel, played by Coward, Palmer and Worth.[5]
The trilogy comprises:
They originally ran in repertory for a limited season ending on 30 July 1966.[4][6] All were directed by Vivian Matalon.[7] There were 64 performances of A Song at Twilight and 60 of the double bill.[4]
Coward had intended to appear in the trilogy on Broadway, but his health was deteriorating, and he was unable to do so. In 1974, a year after his death, A Song at Twilight and Come Into the Garden Maud were presented on Broadway as Noël Coward in Two Keys; Shadows of the Evening was omitted, and at 2020 has not had a Broadway production.[8]