C. C. Mann, 92, a longtime church musician and music teacher and a Washington resident for 21 years, died Thursday at Howard University Hospital after a stroke.

Mrs. Mann received her first appointment as a church pianist at age 12 in her native Atlanta, and continued performing in churches there, in New York and in Washington for the next 70 years.

She was a former cochairman of the music unit in the Progressive National Baptist Convention and served as minister of music of the Christian Women's Retreat in Pawling, N.Y., for 15 years.

In 1960, she moved to Washington to be near her son, Dr. Marion Mann, former dean of the Howard University College of Medicine. She then taught music courses at local religious institutions and at the Nannie H. Burroughs Elementary School here. She also served as organist at Mount Bethel Baptist Church in Washington and Mount Jezreel Baptist Church in Alexandria. In her 80s, she served as an occasional organist at the Metropolitan Baptist Church here.

Mrs. Mann attended Clark and Spelman Colleges, both in Atlanta, and the Mannes College of Music in New York.

Her husband, Levi J. Mann, died in 1964.

Besides her son, survivors include four other sons, William and Levi both of Detroit, and Howard and John W., both of New York City, 14 grandchildren and 15 greatgrandchildren. Another son, Lawrence, died in 1958.

The family suggests that expressions of sympathy be in the form of contributions to the C.C. Mann Music Scholarship Fund at Howard University College of Fine Arts.