Cosi fan tutte cast biographies

Joel Robson – Don Alfonso
Joel is currently at the Royal Academy of Music Opera School, having recently appeared as Argante (Rinaldo) and Dancaïre (Carmen), and won the Blyth-Buesst Operatic Prize. His teacher is Mark Wildman, and his studies are supported by the Anatoly Mishin Award. Joel also holds a BA, MA, and an MPhil from King’s College, Cambridge, where he was also a Choral Scholar, and an MPerf from the Royal College of Music.

Katerina Oikonomou – Fiordiligi
Katerina Oikonomou is a coloratura soprano celebrated for her vivid stage presence and exceptional vocal agility. Recent roles include the Queen of the Night (Die Zauberflöte) and Konstanze (Die Entführung aus dem Serail). An international prizewinner, she has received First Prizes in New York, London, and the Vivaldi Competition, and was a laureate of the Mozart Competition in Vienna. She also collaborated with the Marina Abramović Institute and works as a screen actress.

Isaac Conibear – Guglielmo
Isaac Conibear is a postgraduate baritone, studying under the tuition of Dr Robert Anderson at Trinity Laban Conservatoire of Music and Dance. Isaac holds the Drapers de Turkheim scholarship for the 2025-2026, after receiving the Kathleen Robert’s Vocal Scholarship for the previous year. Isaac competed in RCSheriff’s young musician of the year in 2019 having won the first prize, and also competed again in 2021 receiving the 2nd prize.

Bartosz Thiede – Ferrando
Bart Thiede is a Polish-Irish award-winning composer, musical director and conductor based in Oxford. A University of Oxford graduate, he works across theatre, broadcasting, choral music and opera. He recently created Have You Met Stan?, which opened at London’s King’s Head Theatre after Brighton Fringe and OFFBEAT Festival runs. His commercial recordings include Mater Mundi (Chorum) and On Christmas Night (OxRecs), alongside original soundtracks for podcasts and short films. As an artistic director, he has produced large-scale concert series and festivals. Bart has also led music programmes in schools, cathedrals, and festivals, with a focus on accessible, cross-genre performance.

Zara Donaldson – Despina 
Zara is pursuing a Masters Degree at Trinity Laban studying with Patricia Rozario. Past performances include Giulietta in Bellini’s Capuletti e I Montecchi for the University of Redlands Conservatory California, soloist with Royal Leamington Spa Bach Choir and Berlin Opera Academy as Dew Fairy in Humperdinck’s Hansel und Gretel.

Ilona Nastase – Dorabella
Versatile Mezzo-Soprano, talented in foreign languages, multitasking, and with a positive work ethic, Ilona has significant experience in chorus singing and solo performance. Ilona’s studies at Trinity Laban are supported by the Morag Noble Scholarship. With a vast knowledge of Arts & Humanities as a result of her studies in Musicology, she is a creative problem-solver with outstanding critical thinking abilities. Although still studying and constantly improving, her attention to detail is shown in her performance practice, while her focus on working collaboratively results in great professional reviews both on and off stage. 

Ruby Caddick Lawrence – Ensemble
Ruby is a soprano, vocalist and composer based in London. Having studied at Trinity Laban Conservatoire and Goldsmiths University, Ruby performs a variety of repertoire, with a passion for contemporary classical and experimental music, exploring non-traditional notation, improvisation and performance art.

Oscar Castellino – Ensemble
A graduate of the RCM and recipient of the Christopher Ball Welsh National Opera Scholarship, and ensemble singer at the Royal Opera, Oscar made his solo debut at Welsh National Opera as George Benton in Dead Man Walking. The Times UK described his performance as James Meredith in Kommiltonen1 as ‘a highlight’, while the Morning Star praised him as ‘mesmerising’. Oscar is a longtime associate of Barefoot Opera.

Jenny Miller – Director
Jenny Miller sang for Glyndebourne, Glyndebourne Touring Opera, Scottish Opera, and the RBO, Brunnhilde, Tosca and Witch for Longborough Festival Opera, developing a parallel career as a director. Directing credits include L’Incoronazione Di Poppea, the four Da Ponte/Mozart operas, Die Zauberflote, Rinaldo, Xerxes, Alcina and Anna Bolena for LFO, directing touring versions of these productions. Jenny continues to research the link between classical voice training and current theatre practice.