Jeff Miller is an American multi-instrumentalist and researcher living in London, and is a co-founder of The Prince Regent’s Band. As a performer on the serpent, ophicleide, saxhorns, and both early and modern tubas, he has toured the world and recorded with a wide range of fabulous musicians in diverse contexts, including Sir John Eliot Gardiner’s Orchestre Révolutionnaire et Romantique, medieval jazz fusion group Ars Supernova, and the Hackney Colliery Band. His historical research focuses on the interplay between social context, developing technologies, and innovations in brass instrument design. In contemporary settings, Jeff’s instruments include the tuba, bass trombone, sousaphone, and modular synthesisers. His modern music explores the integration of brass instruments with electronics, particularly in live solo and chamber music contexts, with an emphasis on improvisation and interplay between performers. Jeff is currently pursuing a PhD at the Centre for Digital Music Research (Queen Mary University of London), researching the creation of mathematical tonal spaces and geometric models of harmonic sequences and chord similarity.