Bob grew up in the Chicago area where he inherited a love for singing and entertaining from his father Bob Mack who sang tenor with the 1949 Championship Mid-States 4 quartet. Bob's enthusiasm for close harmony was nurtured listening to quartets like The Four Lads, The Crew Cuts, The Arbors, and The Four Freshman. As a youth, Bob sang in church choirs and has played lead guitar and sung vocals in various rock bands, but Bob's real passion is singing and performing. Before moving to Virginia, Bob sang barbershop with the DuPage Valley Chorus and The Street Corner Four quartert in Illinois. Along with his love for singing, Bob enjoys being semi-retired, spending time with his family, being involved with church activites, and amateur radio.