Dr. John-Luke Addison is a pianist, music director, conductor, composer, and teacher. He has directed music for several international professional theatrical productions, choirs, and churches, and has had published compositions performed internationally. John-Luke completed his Doctorate in Music Composition through the University of Oxford (in affiliation with the Graduate Theological Foundation), and did his other graduate work at York University in Toronto, studying composition.

As a pianist, John-Luke excels in both classical and contemporary work, with a high aptitude for expression and improvisation. As a conductor, John-Luke is a dynamic leader, and directs ensembles with passion, animation, and precision, while achieving high artistic success. As a composer, John-Luke specializes in music that creates emotional and imaginative characters, with a sensitivity to color, balance, and texture. 

Sean McCormac has proudly served as Precentor and tenor section leader for St. Bart’s since 2011. He attained his bachelor’s degree in vocal performance from Cal State Northridge. Sean has performed with many local ensembles, including Greater San Diego Coterie, San Diego Pro Arte Voices, SACRA/PROFANA, and La Jolla Symphony Chorus.

Since settling in San Diego, Seiran has been teaching piano and performing as an accompanist and chamber musician.  Seiran has collaborated with members of the San Diego Symphony Orchestra and the chamber ensemble Trio Lyrique.  Most recently, she has performed, together with her husband and sons, as a member of the Poway Symphony Orchestra.  Seiran earned Bachelors, Masters, and Doctorate degrees in Piano Performance with minors in Muisc Theory and Music History from the Jacobs School of Music at Indiana University.  

Anna Lettang is the Handbell Director at St. Bartholomew's, and is excited to help the halls ring out with joy! During the day, Anna works as the Middle School Music and Theatre teacher at the O'Farrell Charter Schools. Additionally, Anna graduated with her Master's in Choral Conducting in the Spring of 2022 from San Diego State University. Anna also sings with the St. Barts Parish Choir and plays trombone in the Brass Choir. 

Tim McLellan has served as bass section leader at since 2005, and Associate Director as of 2020. Throughout his musical career, he has sung and conducted at Catholic, Lutheran, Methodist, Baptist, and Assembly of God churches. He holds degrees in music from Cal Poly State University and the University of Washington. When he's not at St. Bart's, he teaches math and music to middle school students in San Diego Unified School District.

Ever since Danielle can remember, she has had a passion for the Arts and people – she has been singing since she was a toddler! Danielle decided to pursue this passion for the Arts by attending Biola University and graduating with a bachelor’s degree in Vocal Performance and Opera. She has played lead roles in both Operas and musical theater productions. She is honored to be at St. Bart’s to use her God-given gifts to serve.

Hannah is trilled to be singing in her home town. In fact, the very first professional opportunity was being hired by her Poway High School Spanish teacher to sing the National Anthem. At Poway High School Hannah really found her love of music, both through choir and theater as well as part of the marching band and orchestra in the percussion section. Hannah moved to Orange County after graduating to attend Cal State Fullerton where she received her degree in music and had the opportunity to sing under John Alexander and Dr. Robert Istad both at the university and with the renowned Pacific Chorale. In 2021, Hannah moved back to San Diego and was excited to join the San Diego Master Chorale and now St. Bart’s!