NEW YORK (AP) _ The man credited with building the Boys Choir of Harlem into a famed institution has pleaded guilty to filing a false income tax return.

Walter Turnbull, 54, pleaded guilty Thursday and apologized for failing to report $55,000 in personal income on his 1990 return.

Court papers showed Turnbull also admitted that he understated taxes from 1984 through 1988 by at least $10,000 each year.

U.S. District Court Judge Barbara Jones set sentencing for Oct. 7. Under federal guidelines, Turnbull could receive up to eight months in prison and a fine of up to $10,000.

Under a plea agreement, he could receive a lesser sentence ``based solely on extraordinary charitable works.''

As part of the agreement, Turnbull agreed to file corrected tax returns and pay past taxes and penalties.

Turnbull's famed boys choir provides musical training as well as counseling to hundreds of inner-city youths.