Marshall has developed a unique musical style that combines classical, inspirational, film score, and new age genres of music all in one. He has recorded multiple albums, including his compilation of arrangements inspired by Carl Bloch’s paintings of the life of the Savior titled, This Is the Christ as used by the BYU Museum of Art walking tour for its Carl Bloch exhibit. 

Marshall’s film scores and symphonies have been performed and recorded across the globe, including by the China Philharmonic Orchestra.

Marshall’s career has included opportunities ranging from performing as a hand double pianist for the lead actor in the WB series, Everwood to performing his acclaimed arrangement of “If You Could Hie To Kolob” as a guest soloist with the Tabernacle Choir on its weekly broadcast of Music and the Spoken Word.

He has scored several social media campaigns for the Church of Jesus Christ of Latter-day Saints, including the music for the He is the Gift hit YouTube campaign that broke the world record for the world's largest nativity as performed by The Piano Guys, David Archuleta, Peter Hollens and the Tabernacle Choir.

Marshall has arranged music for various artists including "O Come, O Come, Emmanuel" with Steven Sharp Nelson as performed in The Piano Guys' YouTube video now viewed over 41 million times, "Ave Maria" performed by Lexi Walker, and "One by One" sung by Nathan Pecheco with lyrics by Elder David A. Bednar.

Most recently, he was honored by Utah Governor Spencer Cox and First Lady Abby Cox as recipient of the 2024 Governor’s Mansion Artist Award.

He currently teaches at the University of Utah Institute of Religion and serves as the Music Coordinator for Seminaries and Institutes for the Church of Jesus Christ of Latter-day Saints. He graduated from the University of Utah with BA degrees in Music and Communications and his Masters degree in Public Administration. He and his wife, Kristien live in Salt Lake City, Utah with their 6 children and Cavalier King Charles Spaniels. Those who know Marshall will tell you that he is best known for his music, his smile, and his love of chocolate milk.