As founder and Music Director of the Cardiff Sinfonietta, Jonathan Mann oversaw the orchestra’s expansion over a 15 year period. The orchestra broadcast for the BBC and S4C and worked with soloists including Nicola Benedetti, Dame Evelyn Glennie, Benjamin Grosvenor, Sunwook Kim and Dennis O’Neill. At the start of 2020 the Cardiff Sinfonietta merged with the Welsh Sinfonia to form Ensemble Cambrica, an exciting new orchestra aimed at reaching the community in innovative ways.

Passionate about inspiring young musicians, his role with the Association of Music in International Schools sees him regularly work as guest conductor with young musicians around the world. From 2015 - 2022 he was Artistic Director of the Immanuel Orchestra in Bangkok, Thailand which is modelled on the renowned Venezuelan music program ‘El Sistema’.

Jonathan has also become a popular teacher of conducting. He is Artistic Director of the CIAC Conducting Academy which provides regular masterclass opportunities for emerging conductors including recent collaborations with the Ulster Orchestra, English Symphony Orchestra and NEW Sinfonia.