Errollyn Wallen CBE (born 10 April 1958)[1] is a Belize-born British composer and musician, who moved as a child with her family to London, England.

[5] While her parents moved to New York in the United States, she and her three siblings (one of whom is the trumpeter Byron Wallen) were brought up by an aunt and uncle and she was educated at a boarding school.

Her message that very real difficulties can be best faced with kindness, consideration, and collaboration feels important at the present moment, giving a blueprint for an optimistic future for classical music.

Her first orchestral commission was a concerto for percussion and orchestra, written for percussionist Colin Currie and premiered by him during the finals of the BBC Young Musician competition in 1994.

[17] Her compositions include the "multi-media song cycle" Jordan Town (2001), Dervish for cello and piano (2001), La Luga for guitar quintet (2002), the opera Another America: Earth (2003), and All the Blues I See for flute and string quartet (2004).

[20] The premiere of her Piano Concerto, which was commissioned by Julian Lloyd-Webber, then outgoing principal of the Royal Birmingham Conservatoire, was planned for June 2020, but was postponed due to the COVID-19 pandemic.

Her CDs include: The Girl In My Alphabet, Meet Me at Harold Moores, featured on the Brodsky Quartet Mood Swings alongside Björk, Sting and Elvis Costello.

[28] In July 2024, Wallen featured on BBC Radio 4's Desert Island Discs; she chose the second movement of Bach's "Double Violin Concerto", performed by Isaac Stern and Itzhak Perlman with the New York Philharmonic conducted by Zubin Mehta as her favourite track, a collection of Bach sheet music as her favourite book, and Wigmore Hall as her luxury item.