Our Staff

Executive and Office Staff

Executive Director

This could be you! See details for applying by clicking here.

Rachael Norden – Office Coordinator

Bringing to the table her extensive backgrounds in music, banking, and customer service, Rachael has a passion for arts administration and has been contributing her skills as part of the MOSY team since April of 2018.  Happy to answer any questions you may have about payments, invoices, donations, memberships, upcoming MOSY events, or just general inquiries, feel free to reach out to Rachael any time by emailing office@themosy.org or calling 573-875-0600.

Sarah Williams – Conservatory Coordinator

After graduating in 2017 from William Woods University with a degree in Theatre Performance, Sarah now brings to MOSY her knowledge of fine arts, theatre, and performance. Appealed by the aspect of coordination and working closely with children and music, Sarah has been a valuable member of the MOSY team since January of 2018. Contact Sarah at with any questions about the Conservatory, ensemble registration and auditions, or tuition at conservatorycoordinator@themosy.org.

Artistic Staff

Kirk Trevor – Music Director and Conductor

Although Kirk Trevor has been Music Director of the Missouri Symphony Orchestra since 2001, he has also been conductor of the Dallas and the Knoxville Symphonies, as well as the Martinu Philharmonic in the Czech Republic. Born in England, he started his musical career as a pianist from age 5 and took up the cello when he was 11, and had conducted his first orchestra concert by age 14. To read more about Kirk, visit his bio page on our site by clicking here.

Briana Frieda – Assistant Music Director

Having graduated from Mizzou with a Bachelors in Music in 2013, Briana moved on to pursue a Masters in Musicology from the University of North Carolina at Chapel Hill, of which she achieved in 2015. Today, Briana continues to contribute to the artistic and musical community of Columbia teaching not only as Assistant Director for MOSY, but as the Orchestra Director at Oakland Middle School and Director of the Chamber Orchestra at Battle High School.

Kristen Heitkamp – Graphic Designer

Kristen is a freelance graphic designer that has been a dedicated member of the MOSY team since 2017.  Curious to see some of Kristen’s work? Subscribe to our newsletter (sign-up located below) and you can see for yourself just how wonderful her designs are!