Ad Astra Treble Chorus
Dr. Julie Yu, Conductor
Ad Astra Treble Chorus is one of ÃÛÁÄÖ±²¥ City University’s premier choral ensembles, composed of treble-voiced singers who perform a range of choral repertoire throughout the academic year. The ensemble participates in campus concerts alongside other OCU choirs, including collaborative performances, regional tours, and featured concert events, contributing to OCU's rich performance tradition.
Rehearses 3 to 3:50 p.m. Monday-Thursday, Small Rehearsal Hall
University Chorale
Dr. Karsten Longhurst, Conductor
University Chorale at ÃÛÁÄÖ±²¥ City University is an auditioned mixed choir that brings together voices from across the campus community to perform a wide range of choral repertoire. The ensemble offers students a significant performance experience, appearing in scheduled choral concerts throughout the academic year and contributing to signature events such as the annual Christmas Vespers and other collaborative programs that highlight OCU's vibrant vocal music offerings.
Rehearses 2 to 2:50 p.m. Monday-Thursday, Medium Rehearsal Hall
University Singers
Dr. Julie Yu, Conductor
University Singers is an auditioned mixed choral ensemble and one of OCU's most rigorous and competitive vocal groups. This ensemble performs a broad range of repertoire and appears regularly in major campus concerts, including fall and winter choral programs, performances alongside other OCU choirs and orchestral forces, and regional tours. University Singers has been featured as a collegiate choral honor ensemble at professional events such as the ÃÛÁÄÖ±²¥ Music Educators Association convention, reflecting its high artistic standards and commitment to performance excellence.
Rehearses 2 to 2:50 p.m. Monday-Thursday, Small Rehearsal Hall
Choral Auditions
OCU Major Ensembles (Orchestra, Wind Bands, Choirs, Jazz) are open to music majors and non-major students alike.Â
The Choral Placement auditions Schedule will be announced shortly before the start of each semester. Incoming freshmen and transfer students audition during Orientation Week each August. Materials and musical examples are shared shortly before each semester.
Auditions for choir placement will take place in Dr. Karsten Longhurst's office (Bass Center B207). A prepared example will be provided when you schedule your audition time. The audition also includes general vocalizing and sight-reading.
If you have specific questions, please call Dr. Julie Yu at 405-208-5015 or email her at [email protected].
2025-2026 Concert Season
University Chorale Fall Concert
7:30 p.m. Tuesday, Oct. 7, 2025
Christ the King Catholic Church
Free and open to the public.
University Singers and Ad Astra Fall Concert
7:30 p.m. Tuesday, Oct. 7, 2025
Cathedral of Our Lady of Perpetual Help
Free and open to the public.
Christmas Vespers
All Choirs and Symphony Orchestra
8 p.m. Friday, Dec. 12, 2025
First Presbyterian Church OKC
Tickets required: www.okcu.edu/tickets
Christmas Vespers
All Choirs and Symphony Orchestra
4 p.m. Saturday, Dec. 13, 2025
First Presbyterian Church OKC
Tickets required: www.okcu.edu/tickets
Ad Astra and University Singers Winter Concert
4 p.m. Sunday, Feb. 8, 2026
Cathedral of Our Lady of Perpetual Help
Free and open to the public.
University Chorale Winter Concert
7:30 p.m. Monday, Feb. 9, 2026
Location TBA
Free and open to the public.
Ad Astra Winter Concert
7:30 p.m. Tuesday, Feb. 10, 2026
Location TBA
Free and open to the public.
Spring Choral Concert
All choirs
7:30 p.m. Monday, April 6, 2025
First Presbyterian Church OKC
Free and open to the public.
2025-2026 Events
2025 Middle School and Junior High Choral Workshop featuring guest artist Laura Farnell!
10 a.m. to 6:30 p.m. Friday, Oct. 24, 2025
2025 High School Choral Invitational
Thursday, March 12th, 2026
Stay tuned for details!

