Alexander Mansour is a composer, cellist, and pianist from Los Angeles California.
As a composer, Alex is passionate about writing for both the concert hall and the screen. He has had orchestral works commissioned by the Alabama Symphony Orchestra, American Youth Symphony, and the Washington and Lee University Symphony. Mansour’s Fantasy Noir was awarded third place in the American Prize. His chamber music has been performed at the Bowdoin and Atlantic Music Festivals. Alex was invited to the Yale School of Music (2020) as a composing fellow in the Norfolk New Music Festival. He had a large form operetta premiered by the Notre Dame Children’s Choir in 2023, and his string quartet Memory Lane workshopped/recorded by the Aizuri quartet in 2021. In film, he recently scored Radical Wolfe (dir. Richard Dewey, now on Netflix) as well as geopolitical thriller/documentary SOMM: Cup of Salvation (dir. Jason Wise). Alex has attended the Tribeca Film Festival for short films Endling (dir. Kelly Yu, 2024) and Hoop Dreams (dir. Kasey Elise Walker, 2022). Mansour was nominated for a World Soundtrack Award in 2024, the Sabam Award for Best Original Composition by a Young Composer.
As a cellist, Alex is an active session musician in Los Angeles (recent credits include Venom: The Last Dance, Bad Boys: Ride or Die, Black Adam, Dungeons and Dragons, The Gilded Age). He performed at the GRAMMY Awards in 2025, served as principal of American Youth Symphony (2019-2023), and has joined the New York String Orchestra Seminar for their Christmas concerts at Carnegie Hall. He has also appeared on NPR’s “From the Top”. He has studied with Katinka Kleijn (Chicago Symphony Orchestra) and during an exchange in London, Richard Lester (Royal College of Music).
As a jazz pianist, Alex arranged and played for Arturo Sandoval’s Christmas album, performing with him at Walt Disney Concert Hall in 2018. He attended the 2019 BANFF International Workshop for Jazz and Creative Music, a program helmed by Vijay Iyer and Tyshawn Sorey, and was the pianist of the USC Jazz Honors Combo 2019-2020. He has studied piano with Russell Ferrante and Jim Trompeter.
