The dramatic mezzo-soprano was named by both BBC Music Magazine and the Observer as "a rising star", and the Financial Times as the "Face to Watch in Opera". A former BBC New Generation Artist, she is a graduate of Cambridge University and the Royal College of Music, and is the recipient of numerous awards. She is particularly associated with the Bayerische Staatsoper, and has also appeared in opera at the Teatro alla Scala, Salzburg Festival, Festival d'Aix-en-Provence, Opera de Lille, Beijing Festival, Baltic Sea Festival, Scottish Opera and Opera North. Her roles include Fricka, Waltraute, Second Norn, Wellgunde, Mrs Grose, Leda, Gaia, Lady de Hautdesert, Jocaste, Hedwige, Pasqualita, Lucretia, Margret, Dido, Hänsel, Mrs Noye, Third Lady, Mrs Herring, Mrs Sedley, Giovanna Seymour and Agrippina.
She has performed with many of the world's greatest orchestras in repertoire spanning the centuries, from Bach's St Matthew Passion with the Dallas Symphony and Hong Kong Philharmonic Orchestras, both under Jaap Van Zweden, Mahler's Third Symphony under Franz Welser-Möst and the Cleveland Orchestra, Elgar's Sea Pictures with the Hamburg Symphoniker under Sir Jeffrey Tate, Schumann's Das Paradies und die Peri with the Accademia Di Santa Cecilia under Daniele Gatti, Schumann's Faustszenen with the Leipzig Gewandhausorchester and Wiener Symphoniker Orchestras under Daniel Harding, as Jocaste in Stravinsky's Oedipus Rex under Sir John Eliot Gardiner with the Berlin Philharmonic and London Symphony Orchestras (released as an LSO Live disc), Adès's Totentanz under Thomas Adès with the Royal Concertgebouw Orchestra, and Pasqualita in Adams' Doctor Atomic under John Adams with the BBC Symphony Orchestra. Maestros she has performed under include Kirill Petrenko, Sir Andrew Davis, David Zinman, Donald Runnicles, Kent Nagano, Ingo Metzmacher, Christoph Eschenbach, Alondra de la Parra, Michael Schønwandt, Vasily Petrenko, Bernard Labadie, Osmo Vänskä, Jun Märkl, Kiril Karabits, Juanjo Mena, Dan Ettinger, Vasily Sinaisky, Thomas Søndergård, Thomas Dausgaard, Leonard Slatkin and Harry Bicket. She made her solo recital debut at the Wigmore Hall broadcast live on BBC Radio 3. Her extensive discography includes Anthony Payne's arrangement of Vaughan Williams' Four Last Songs with the BBC Symphony Orchestra under Martyn Brabbins for Albion Records, which she premiered at the BBC Proms and which was nominated for a Grammy Award.
Jennifer's engagements in 2017-18 include, at the Bayerische Staatsoper, La Ciesca (Gianni Schicci) / La Maestra della Novizie (Suor Angelica) in a new production of Puccini's Il Trittico, and Flosshilde (Das Rheingold, Götterdämmerung)/ Roßweise (Die Walküre) / Second Norn (Götterdämmerung) in Wagner's Ring Cycle, all under Kirill Petrenko. She will also sing Beethoven's 9th Symphony with the Royal Stockholm Philharmonic Orchestra and the Cleveland Orchestra, both under Franz Welser Möst, with the Spanish National Orchestra and David Afkam, and with the BBCSSO and Thomas Dausgaard, Mahler's Das Lied Von Der Erde with the Hamburger Symphoniker, Adés's Totentanz with the Swedish Radio Symphony Orchestra and Daniel Harding, Verdi's Requiem with the Bergen Philharmonic Orchestra and Edward Gardner, Elgar's The Dream of Gerontius with the BBC Scottish Symphony Orchestra and Martyn Brabbins, Bach's St Matthew Passion with the Bach Choir and David Hill, and Mahler's Rückert Lieder with the Jacksonville Symphony Orchestra and Courtney Lewis. She will appear in recital with Joseph Middleton for BBC Radio 3 at the Northern Ireland Festival of Voice.