Ian Macpherson studied piano and composition at the Royal Academy of Music in London, winning the Walter Macfarren Prize for best pianist in the Recital Diploma class in his final year. While still a student he became Musical Director of a West End musical, and then went on to conduct many shows in London, including:- "Divorce Me Darling", "Matchgirls", "Two Cities", "Promises, Promises", "Thomas and the King", "I Do! I Do!", "Privates on Parade", "Annie", "Song and Dance", "Kiss Me Kate", "Poppy", and "Pickwick". He also conducted "I Do! I Do!" and "Robert And Elizabeth" in Canada.

As musical arranger and orchestrator his theatre work includes the musicals "Pickwick", "Kiss Me Kate", "Poppy", "Windy City", "Pinocchio", "Oh Kay", "Metropolis", "Scrooge" and "Sherlock Holmes" in London, "Robert & Elizabeth" in Canada, and "Rage of the Heart" and "Michaelangelo" in the USA.

Working also in the recording studio, he has composed, arranged and conducted music for Films, TV, Commercials and Library music. He has orchestrated film scores for Nigel Hess, Jennie Muskett, Alex Heffes and many other composers.

He taught Orchestration of Media & Applied Music at the Royal Academy from 2000 to 2009.

Most recently he has been providing new symphonic arrangements of many popular pieces for Carl Davis, both for live concerts and recordings.