Callum Au – Trombone

Callum Au is a British composer, arranger, orchestrator, and trombonist. He writes music across a wide range of genres, with a particular passion for orchestral and large jazz ensemble music. He is highly regarded for his stylistic awareness and versatility, and has worked with some of the world’s biggest artists.

Born in London to a Scottish mother and a Chinese father, Callum spent most of his formative years in Blackpool before moving to London, where he now lives and works.

Over the past fifteen years, Callum has established himself as one of the busiest arrangers in the world. He has had the privilege of writing music for many international artists including Quincy Jones, Jamie Cullum and RAYE, and ensembles including the Royal Philharmonic Orchestra, the WDR Funkhaus Orchestra, and the Danish Radio Big Band. In 2021 he arranged two songs for Michael Bublé’s Grammy winning album Higher. More recently, he contributed four arrangements to Dua Lipa’s Live from the Royal Albert Hall and wrote the vast majority of the critically acclaimed 2024 BBC Concert Orchestra Disco Prom.

Callum is also active as a composer, with his flair for arresting melodies and lush complex harmony proving popular with audiences and musicians alike. Recent commissions include works for Inner City Brass, the BBC Scottish Symphony Orchestra, and Bone a-fide Trombone Quartet, and groups as diverse as the BBC Concert Orchestra and the SWR Big Band have performed his original music.