Our Staff
Keith Koster – Artistic Director
Keith has been singing with Reveille Men’s Chorus since 2013 and served as Assistant Director until 2020. He has served as vocal coach of Reverb since her inception in 2014. Reverb continues to wow audiences through community outreach partnerships and collaborations in Tucson. Reverb’s debut to a standing room only crowd at GALA Festival in Denver this past summer drew raves and critical acclaim.
Now a retired educator for Amphi Schools, Keith taught chorus and musical theater to middle and high school students for nearly 20 years. He is Creative Worship Director, accompanist and bandleader for Shelter at Saguaro Christian Church, designing and creating worship weekly, bringing ancient and modern together for a unique and experiential worship experience.
He is founder and past Artistic Director of Great Lakes Men’s Chorus in southeastern Michigan and past Artistic Director of Desert Voices where collaborations, commissions and touring were key. He served on the GALA Board for four years, his legacy being the creation of youth policies to include GLBTQ youth in GALA Choruses and events. These policies led to the creation of several queer youth choruses around the nation.
Keith is an active member of Arizona Educators Association, American Choral Directors Association and Association of Disciples Musicians.
Adriel Reynolds – Asst. Director
Adriel has been singing with Reveille since 2015 and took up the mantle of assistant director during the 2020-2021 Reveille season. An Oklahoma native, he holds degrees in Saxophone Performance, Music Education and Music Composition and is currently pursuing his doctorate in Composition at the University of Arizona. He’s been writing music since high school and strives to create an eclectic blend and past, present, and future styles of music that allows each style to be appreciated and valued.
Adriel teaches middle school band, orchestra, and choir in eastern Tucson and is piloting a new course for students on his campus. He belongs to several organizations including Kappa Kappa Psi and Phi Mu Alpha Sinfonia, and NAFME. In his spare time, he enjoys reading, video, board & table-top games, and being a dog-dad to his pupper, Delilah. He also serves as a faculty sponsor for his school’s National Junior Honor Society and other organizations on his campus.
Dr. Kyungsun Choi – Accompanist/Coach
Dr. Kyungsun Choi has been praised in the press as “a great energetic pianist” (Arizona Daily Star) and “a pianist with rich emotion and sensitivity” (The Korean Arizona Times). He has been enjoying varied careers as a soloist, chamber musician, an accompanist and a teacher. A native of Seoul, South Korea, Pianist Kyungsun Choi graduated from the Yonsei University in Seoul, where he earned Bachelor’s degrees (BM) in Piano Performance and was awarded as “High Honored Student” by the president. He went on to the University of Northern Iowa on a full scholarship where he received a Masters of Music (MM) and served as a graduate teaching assistant. He received a Doctoral degree (DMA) in Piano Performance at the University of Arizona and served as a graduate teaching assistant. His teachers have included Dr. Paula Fan, Prof. Sean Botkin, Prof. Myonghak Lee, and Hyeran Lee.
Pianist Kyungsun Choi has given many solo recitals and chamber recitals both locally in the United States and internationally – Mexico and South Korea. He appeared as a soloist two times with Tucson Repertory Orchestra playing Rachmaninoff Piano Concerto No. 2 and Beethoven Piano Concerto No. 5 “Emperor”. Recently, he performed Morton Gould’s “Invention” for Four Pianos and Orchestra in March with Tucson Symphony Orchestra. He was invited and performed at several symposiums at the University of Arizona celebrating the music of Charles Ives, Aaron Copland, and Johann Sebastian Bach. He also gave master classes and lecture recitals in several colleges. As a collaborative pianist, he participated and performed numerous chamber recitals, chamber series, and festivals. In addition, he has worked as an opera pianist and participated in many productions such as University of Northern Iowa Opera, University of Arizona Opera, Southern Arizona Symphony Orchestra Opera, Wieck Chamber Singers, and Opera Guild of Southern Arizona. He also has been an accompanist for Reveille Men’s Chorus, with whom he traveled to perform in Mexico and throughout the United States. As a teacher, his students have been appearing as prize winners at many competitions.
TJ Steib – Chorus Manager
TJ joined the chorus as a singer after moving to Tucson from Honolulu. During his first season, he stepped up to position of chorus manager as a way of continuing to support the chorus. He sang with the Gay Men’s Chorus of Los Angeles (GMCLA) and the Gay Men’s Chorus of Hawaii (GMCofH) in the past and knows firsthand that music can indeed change lives. TJ most recently played a part on the Honolulu International Film Festival’s programming team and, once upon a time, worked developing toys for The Disney Store. TJ wasted no time in joining the folks with the Tucson International Film Festival and has been very active in the annual event.
Recently TJ took the opportunity to return to Honolulu. Due to his growing experience with video conferencing and remote management of the chorus, Reveille has embraced his staying with the Chorus in an administrative capacity from his remote oasis. He always looks forward to helping the Artistic Team get their concepts out to the world.