An obituary in Saturday's editions of The Washington Post about Sylvia Kaplowitz, a local musician and performer who died June 5, failed to mention one of her two sons, Conrad, of London, England. The Washington Post regrets the omission.

Sylvia Kaplowitz, 76, a longtime resident of Washington who was a musician, a teacher, a radio personality and active in Jewish organizations, died June 5 in a hospital in Fort Lauderdale, Fla. She had cancer.

Mrs. Kaplowitz played the piano, organ, and accordian. She performed at the White House for four presidents. During World War II, she took part in more than 20 USO shows for servicemen. For many years she gave music lessons to students in this city. In the mid-1930s, she also had her own radio show, "Who Is Sylvia?" which was broadcast by WMAL.

After World War II, Mrs. Kaplowitz helped organize fund-raising events for B'nai B'rith and Hadassah.

Mrs. Kaplowitz was born in Baltimore and came to Washington at an early age. She was a graduate of the Peabody Conservatory of Music in Baltimore and George Washington University.

She was the wife of Abraham J. Kaplowitz, a founder of the old Kaplowitz Brothers ladies' apparel stores, who died in 1975. Mrs. Kaplowitz lived in Washington until moving to Fort Lauderdale about four years ago.

Her survivors include a son, Karl, of Potomac; a sister, Edythe Goodman of Baltimore; five grandchildren, and two great-grandchildren.