There are no tryouts, as the choir is intended to build self-esteem, says Terry Ortman, Doris Ortman's husband and public relations director at Camp Joy-El.
Erin Marshall, 18, of Chambersburg, Pa., says the choir has helped her overcome shyness.
"This gives me a chance to be a leader," says Marshall, who will be majoring in psychology and elementary education this fall at Shippensburg University in Shippensburg, Pa.
Alicia Womack of Hagerstown has been a member for three years, and she says she enjoys sharing the gospel.
"It's a great way to draw people in and tell them about Christ," says Womack, 16, a 1997 graduate of North Hagerstown High School.
The choir usually doesn't travel farther than York County, Pa. - most of the churches where it performs are within a 45-minute drive until it goes on its annual tour. There is a waiting list of churches that would like the choir to perform.
The students memorize all their music. They sometimes worry they will make mistakes, but Doris Ortman says she isn't concerned about that.
"I can just see the confidence building," she says.