 Montague was born and educated in the US, but lived in Warsaw, Poland (1972–74) on a Fulbright Fellowship, and since 1974 in London working as a freelance composer, pianist, conductor touring worldwide.His music has been performed at numerous international festivals, including the BBC Proms at the Royal Albert Hall in London, Royal Festival Hall, the Warsaw Autumn festival, the Paris Festival d'Automne, the Kennedy Center in Washington, D.C., Bang On a Can (NYC), Adelaide, Hong Kong and Singapore Festivals.He has been commissioned by such sources as the BBC Proms, the Royal Festival Hall (London), Barbican Centre (London), New Music Biennale (UK), Birmingham Royal Ballet (UK), the National Portrait Gallery (London), the Royal Ballet (UK), British Telecom (for the London Symphony Orchestra), the Trans Atlantic Arts Consortium (UK/US), the Calgary Philharmonic (Canada), the Bournemouth Symphony Orchestra, BBC Symphony Chorus, the Hilliard Ensemble, the Smith Quartet (UK), pianist Stephen Kovacevich, percussionist Evelyn Glennie, harpsichordist Elisabeth Chojnacka, the International Computer Music Association and the Changwon International Chamber Music Festival (South Korea).