While in college, Keir started to collaborate with Joseph Gordon-Levitt through his company Hitrecord. That collaboration eventually led to a full-time position with Hitrecord as Music Coordinator, and then Associate Music Producer. His work there has resulted in four Emmy Nominations, and winning two of them. Over the past ten years, Keir has also worked with the composers Nathan Johnson, Judson Crane, and Joe Trapanese, who have instrumental in learning the process of film and TV composition. Most recently, Keir composed the score, alongside Ryan Lott (Son Lux), for the Freeform series ‘Single Drunk Female’, which has premiered to overwhelmingly positive reviews. He lives and works in Valley Village with his pup Lucci.