William Joel "Taz" DiGregorio (January 8, 1944 – October 12, 2011) was a longtime member and keyboardist for the Charlie Daniels Band.
He was born and lived in Southbridge, Massachusetts until 1962 when he went on the road.
He was self-taught on the keyboards, practicing from tunes by Elvis Presley, Fats Domino, and Little Richard following his attendance at a Ray Charles concert.