Williams, who is slowly losing his hearing after a near-fatal bout with meningitis last year, directed the Wittenberg choir last summer during a reunion and Alumni Weekend Reunion.
That emotional event is the subject of a Learning Channel documentary to air this week as part of its "Reunion" series.
A 1967 Wittenberg graduate, Williams who is not to be mistaken for the famed Hollywood composer, has directed choirs for 25 years but will have to give up life-long passion.
More than 70 of Williams' former choir members who attended Wittenberg between 1969 and 1982 reunited to pay tribute to the man who influenced so many.
The TLC program will air three times this fall: 1 p.m. on Friday, Oct. 2, Friday Oct. 23 and Monday Nov. 16.
Banyan Productions of Philadelphia is producing a daily afternoon documentary series which will air over the next nine months. Each half-hour episode follows two or more individuals as they prepare for, anticipate and experience a reunion.
TLC reaches more than 58.4 million homes and is the second-fastest growing basic cable network.
