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is a composer, songwriter,

music producer and


based in LA.

Kate Diaz headshot

Kate composes scores and songs for film, TV, theater, video games and other media.  She writes, orchestrates, arranges and produces for herself and others, and she is also a session vocalist and guitarist.  


She is the composer/lyricist and orchestrator/arranger of the 2024 new musical Redwood (book/lyricist/director Tina Landau, starring Idina Menzel).


Kate got her start as a performing songwriter from a young age, releasing five albums of original songs and playing hundreds of shows and festivals. She is endorsed by Godin Guitars, and reviewers describe her as an "accomplished guitar player" with "an astonishing voice" whose songs have "clever lyrical content" and "natural rhythmic flow.”

Originally from the Chicago area, Kate graduated from Harvard University magna cum laude, as a history/political science major.  She also graduated summa cum laude from Berklee College of Music, as a Contemporary Writing & Production major and guitar principal.


selected scores

selected songs

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