| Adams | Nixon in China · Third Secretary | Greek National Opera, 2007 |
| Bellini | La Sonnambula · Teresa | Vlaamse Opera, Antwerp/Gent, 2008 |
| Berg | Lulu · Gymnasiast/Garderobiere/Groom | Vlaamse Opera, Antwerp/Gent, 1997/98 |
| Boïto | Mefistofele · Martha/Pantalis | Vlaamse Opera, Antwerp/Gent, 2001 |
| Britten | The Beggars' Opera · Mrs. Peachum/Mrs. Trapes | Opéra du Rhin, Strasbourg, 1999 |
| Britten | The Turn of the Screw · Mrs. Grose | Salzburger Landestheater, Salzburg, 2005 |
| Britten | Peter Grimes · Auntie | Opéra du Rhin, Strasbourg, 1998 |
| Britten | Peter Grimes · Mrs. Sedley | (cover) Opera North, Leeds, 2007/08 |
| Britten | Phaedra · Phaedra | Presteigne Festival, Wales, 2004 |
| Constant | Sade-Thérèse · Thérèse | Berliner Kammeroper, Berlin, 1995 |
| Copland | The Tender Land · Ma Moss | Lyon Opera, 2010 |
| Dvořák | Rusalka · Ježibaba | (cover) Glyndbourne Opera, 2009 |
| Honegger | Jeanne d'Arc au Bûcher · Catherine | Vlaamse Opera, Antwerp/Gent, 2004 |
| Humperdinck | Hansel and Gretel · The Witch/Mother | (studied) |
| Korngold | Die Tote Stadt · Brigitta | (cover) Royal Opera House, Covent Garden, 2009 |
| Ligeti | Le Grande Macabre · Mescalina | (studied) |
| Massenet | Cendrillon · Madame de la Haltière | Opéra du Rhin, Strasbourg, 2003 |
| Menotti | The Medium · Baba (Mme. Flora) | Muziektheatre Transparant, Belgium/Holland, 1996/97 |
| Mozart | Die Zauberflöte · Third Lady | Vlaamse Opera, Antwerp/Gent, 2000 |
| Mozart | Cosí fan Tutte · Despina | Pimlico Opera, UK tour, 1996 |
| Nielsen | Maskarade · Magdelone | (cover) Royal Opera House, Covent Garden, 2006 |
| Previn | A Streetcar Named Desire · Eunice Hubbel | Opéra du Rhin, Strasbourg, 2001 |
| Purcell | Dido and Aeneas · The Sorceress | British Council Syrian Tour, 1994 |
| Saint-Saëns | Samson et Delilah · Delilah | (studied) |
| Shostakovitch | Lady Macbeth of Mtsensk · Aksinya | (cover) Royal Opera House, Covent Garden, 2007 |
| Strauss | Arabella · Kartenaufschlägerin | Vlaamse Opera, Antwerp/Gent, 2004 |
| Strauss | Elektra · Klytemnestra | (studied) |
| Stravinsky | Oedipus Rex · Jocasta | Dartington Summer Music, 1993 |
| Stravinsky | The Rake's Progress · Baba the Turk | Opera Factory - South Bank Centre, London & Lisbon Opera House, 1994 |
| Sullivan | The Mikado · Katisha | D'Oyly Carte Opera Company, Savoy Theatre, 2002 |
| Verdi | Otello · Emilia | Vlaamse Opera, Antwerp/Gent, 2001 |
| Verdi | Falstaff · Mistress Quickly | Salzburger Landestheater, Salzburg, 2005 |
| Verdi | Un Ballo in Maschera · Ulrica | Castleward Opera, N. Ireland, 2007 |
| Verdi | Il Trovatore · Azucena | European Chamber Opera, Bloomsbury Theatre, London, 1992 |
| Wagner | The Ring · Waltraute | (studied) |
| Wagner | The Ring · Erda | (studied) |
| Wagner | The Ring · Fricka | (studied) |
| Wagner | Der Fliegende Holländer · Mary | Vlaamse Opera, Antwerp/Gent, 1999 |
| Weill | Happy End · Lilian | Muziektheatre Transparant, Belgium/Holland, 1996/97 |
Susie in Fliegende Holländer with Nina Stemme |
As a singer and composer Susannah has always taken a keen interest in contemporary music. At the Royal College of Music she studied composition with Stephen Dodgson, Alan Ridout and Edwin Roxburgh. She worked with John Cage, Murray Schaeffer and Gilles Tremblay at the Banff Centre in Canada, performing their works. She sang
(by Schönberg) in Sienna. A Music Theater Recital of these songs is available which includes a dialogue between Kandinsky and Schönberg concerning music and art, as well as live painting.
, Royal Opera House Garden Venture). For her own company Selfmade Music she commissioned (and sang the leading roles in) works by Priti Paintal (
at Batignano. She has worked with Peter Rundel of Ensemble Modern on Ligeti’s
in Brussels. She made her debut at the Vlaamse Opera in Antwerp singing three roles in Berg’s
, and she sang in Philip Glass’ new Peace Symphony in Ghent and at the Ruhr Festival.