More than 600 male voices will be heard at the Real Men Sing concert at Wartburg College Saturday, Oct. 19.

Midwest Music Hall of Fame inductees Tonic Sol-fa — four voices and a tambourine — will headline the concert at 5 p.m. in Neumann Auditorium, which also features male choirs from four states ranging in age from middle school to adult.

Admission is $10 for adults, $5 for all students, and free for age 5 and under. Seating is limited and has sold out early in previous years. Tickets can be purchased at www.wartburg.edu/festivals.

St. Cloud-based Tonic Sol-fa has toured with Jay Leno, Shawn Colvin and Garrison Keillor and has had album sales of more than two million. The New York Times has described its sound as “a vocal kaleidoscope … unique to the human voice.”

The guest choir is Iowa City High’s Little Hawk Singers directed by Jim Berry. Steven Albaugh, choral activities director at Rosemount (Minn.) High School and a recent Minnesota Teacher of the Year nominee, will direct the seventh-to-10th grade choir.

Dr. Lee Nelson, Wartburg director of choirs, will conduct the ninth grade-adult choir, which will sing a new composition by Wartburg senior Connor Koppin of Mason City.

The Real Men Sing festival, sponsored by Ritterchor, Wartburg’s male choir, is in its fourth year and draws participants from Iowa, Minnesota, Wisconsin and Missouri. The festival includes workshops leading up to the concert.

Real Men Sing, Nelson said, “helps area choral programs inspire, teach and motivate their male singers early in the year. The festival is open to any male singer grade seven through adult. Church and community choir singers, directors, chaperones, parents and family all are invited to sing. The response has been overwhelmingly positive.”