MCO® California
For residents of Orange County and San Diego and surrounding areas. The California locale opened in 2007.
2nd Semester youth registration for both Orange County and San Diego has now closed. Registration for the 2026–2027 season will open this spring.
We are excited to announce the continuation of our satellite rehearsal location in San Diego for all youth ensembles, if there is sufficient enrollment. We will not offer Grand Chorus rehearsals at this time. San Diego participants will join the rest of the California locale for performances at Segerstrom Center for the Arts in Costa Mesa.
PARTICIPATION
Please read the IMPORTANT INFORMATION and REHEARSAL SCHEDULE sections below prior to registering or requesting an audition. Additional details may be found on the FAQ’s page.
To gain a better understanding of MCO, please read the About MCO section, including the Performing Ensembles and Participation Info pages. We also encourage you to visit our YouTube channel or listen to one of our eight albums.
Youth Choirs
For ages 4–18
Participation in youth ensembles does not require an audition. Simply click the Register button below to register your child online.
- Orange County: Regular registration (2nd Semester only) opens December 15 and runs through the Monday after the first rehearsal of the semester. Late registration will incur an additional tuition cost of $20.00 per child and runs through the Monday after the second rehearsal of the semester, which is the final registration deadline. Three-payment and full-payment plan options are available during regular and late registration. As of February 10, all registration for Orange County has closed.
- San Diego: Regular registration (2nd Semester only) opens December 15 and runs through the Friday after the first rehearsal of the semester. Late registration will incur an additional tuition cost of $20.00 per child and runs through the Friday after the second rehearsal of the semester, which is the final registration deadline. Three-payment and full-payment plan options are available during regular and late registration. As of February 13, all registration for San Diego has closed.
- Early-bird registration for the full 2026–27 season (both semesters) will open in spring 2026. It offers a 10% discount and 10-payment and full-payment plan options.
Grand Chorus
For accomplished singers (ages 18 and up)
Placement in the Grand Chorus is by audition only. Audition requests for both Orange County and San Diego are being accepted at the link below. (Grand Chorus rehearsals will only be offered in San Diego if there is sufficient interest.)
Full-season participation is now required for continuing participants (those who participated the previous semester). Please direct questions about this to your Grand Chorus Manager. Continuing participants do not need to re-audition but may simply register online via the Register button below. Prior participants who have missed one or more semesters should request a re-audition.
- Regular registration for new 2nd Semester participants for the 2025–26 season will open in early 2026. Those who pass an audition will receive a link to register.
- Early-bird registration for the full 2026–27 season (both semesters) for continuing participants will open in Spring 2026. It offers a 10% discount and 10-payment and full-payment plan options. Only continuing participants (those who participated the previous semester) are eligible for the early-bird discount.
Symphony Orchestra
For accomplished instrumentalists (all ages)
The Symphony Orchestra is composed of volunteer instrumentalists.
Please note that the Symphony Orchestra rehearsals are currently offered only in Orange County. San Diego-based players are welcome to audition.
Placement in the Symphony Orchestra is by audition only. Accepted players agree to participate as a volunteer. Audition requests are being accepted at the link below.
Audition request deadlines:
- July 15 (for 1st Semester)
- December 15 (for 2nd Semester)
Continuing participants (those who participated the previous semester) do not need to re-audition; they may simply register online via the Register button below. Prior participants who have missed one or more semesters should request to re-audition.
Registration for new participants for the 2025–26 season: Those who pass an audition will receive a link to register. Although there is no fee to participate, all Symphony Orchestra participants should register so they will be added to the roster and receive important communications.
CALENDAR
2025–2026 Season (tentative dates)
- 1st Semester 1st Rehearsal: September 30 (San Diego) and October 2 (Orange County), 2025
- 1st Semester Run-Through and Concerts: December 15, 2025, Costa Mesa, CA
- 2nd Semester 1st Rehearsal: January 29 (Orange County) and February 3 (San Diego), 2026
- 2nd Semester Run-Through and Concerts: May 1, 2026, Costa Mesa, CA
Orange County Rehearsal Schedule
Choral ensembles rehearse weekly on Thursdays throughout each semester (there may be up to two Saturday morning rehearsals per semester). Details and times are below. The Symphony Orchestra rehearses on a few select dates TBD.
Young Singers Chorus
4:30–5:15 pm
Age 4 by the first rehearsal of the semester through 1st Grade
Children’s Chorus
4:55–5:45 pm
Grades 2–5 (homeschool at least age 7 by September 1)
Youth Chorus
5:20–6:45 pm
Grades 6–8 (homeschool at least age 11 by September 1)
Concert Choir Women
5:20–7:30 pm
Grades 9–12 (homeschool at least age 14 by September 1)
Concert Choir Men
6:20–7:30 pm
Grades 9–12 (homeschool at least age 14 by September 1)
Grand Chorus
7:40–10:00 pm (revised 12/1/25)
Accomplished adult singers 18 & over
San Diego Rehearsal Schedule
Choral ensembles rehearse weekly on Tuesdays throughout each semester (there may be up to two Saturday morning rehearsals in Orange County per semester). Details and times are below. Symphony Orchestra rehearsals not currently being offered in the San Diego area.
Young Singers Chorus
3:50–4:35 pm
Age 4 by the first rehearsal of the semester through 1st Grade
Children’s Chorus
4:15–5:05 pm
Grades 2–5 (homeschool at least age 7 by September 1)
Youth Chorus
4:45–6:00 pm
Grades 6–8 (homeschool at least age 11 by September 1)
Concert Choir Women
4:45–6:45 pm
Grades 9–12 (homeschool at least age 14 by September 1)
Concert Choir Men
5:35–6:45 pm
Grades 9–12 (homeschool at least age 14 by September 1)
Rehearsal Location
Orange County: University United Methodist Church of Irvine, 18422 Culver Dr., Irvine
San Diego: The Church of Jesus Christ of Latter-day Saints, 2255 Felicita Rd, Escondido. San Diego participants will be required to travel to Orange County for the two combined choir/orchestra rehearsals.
MCO Participant Handbook
For MCO’s general policies, expectations, tuition costs, attire costs, and all other information, please download and read the MCO Participant Handbook.
Tuition/Fees & Attire Costs
Scholarships are available for those with legitimate financial hardships. Email registration@millennial.org for details. Payment plans are also available and can be arranged as part of the online registration process.
| Ensemble | Age / Grade Level | Tuition / Fees Per Semester* | Concert Attire (Est. Cost) |
|---|---|---|---|
| Young Singers Chorus | age 4–1st grade | $135 (about $11 per rehearsal) | Girls $37–45, Boys $48–64 |
| Children’s Chorus | 2nd–5th grade | $165 (about $14 per rehearsal) | Girls $37–45, Boys $48–64 |
| Youth Chorus | 6th–8th grade | $195 (about $16 per rehearsal) | Girls $73–83, Boys $59 (larger sizes extra) |
| Concert Choir Women | 9th–12th grade | $195 (about $16 per rehearsal) | $74–79 (larger sizes extra) |
| Concert Choir Men | 9th–12th grade | $165 (about $14 per rehearsal) | $117 (larger sizes extra) |
| Grand Chorus | Age 18 and up | $60 | Women $140, Men $117 (larger sizes extra) |
| Symphony Orchestra | Accomplished Instrumentalists | $0 | Concert black (purchase on your own) |