Heather Mary Harper (8 May 1930 – 22 April 2019) was a Northern Irish operatic soprano. She was active internationally in both opera and concert. She performed roles such as Helena in Benjamin Britten's A Midsummer Night's Dream at the Royal Opera House, Elsa in Wagner's Lohengrin at the Bayreuth Festival, and the Countess in Mozart's The Marriage of Figaro at the Metropolitan Opera. She became known internationally when she stepped in for the world premiere of Britten's War Requiem in 1962, and remained associated with the composer's work, but also sang other premieres. Early life and education Heather Harper was born on 8 May 1930 in Belfast, the daughter of Mary (née Robb) and Hugh Harper, a lawyer. She and her three siblings received early musical training. She studied piano at the Trinity College of Music in London on a scholarship, with viola and cello as additional subjects. When the opportunity to study voice came up, she won another scholarship. She initially sang as a mezzo-soprano. She was a member of the Ambrosian Chorus, where her fellow altos included Jean Allister, Pamela Bowden and Helen Watts, the BBC Chorus and the George Mitchell Singers. Her voice at this time was characterised by its "bright, flexible coloratura", more typical of a soprano. She studied with Helene Isepp, and retrained as a soprano with Frederick Husler and Yvonne Rodd-Marling, the authors of Singing: The Physical Nature of the Vocal Organ. Career Her professional debut came in 1954, singing Lady Macbeth in Verdi's Macbeth at the Oxford University Opera Club, produced by Jack Westrup. Her performance was a critical success, and she was subsequently given the role of Violetta in a 1956 television production of La traviata. She was a member of the English Opera Group from 1956 to 1975. Her first role at the Royal Opera House (ROH) Covent Garden was Helena in Benjamin Britten's A Midsummer Night's Dream in 1962. Later roles there included the title role in Arabella by Richard Strauss, Blanche in Poulenc's Les dialogues des Carmélites, Antonia in Offenbach's Les contes d'Hoffmann, Gutrune in Wagner's Götterdämmerung, Micaëla in Bizet's Carmen, Eva in Wagner's Die Meistersinger von Nürnberg, Hecuba in King Priam, Chrysothemis in Elektra, the Empress in Die Frau ohne Schatten and the title role in Ariadne auf Naxos. She appeared at the ROH in 1975 as Ellen Orford in Britten's Peter Grimes in a new production