William Louis Hudson Jr., an American musician, and actor is professionally known as Bill Hudson. He is well recognized for being a vocalist in The Hudson Brothers, a band he formed in 1965 with his two younger brothers, Brett and Mark. He formed the Hudson Brothers band with his brothers, Mark and Brett. In 2011 he released "Two Versions: The other side of fame and family", a memoir. He is also an actor who portrayed in the film "Big Shots" and series "Doogie Howser, M.D.". He has starred in numerous films like "Zero to Sixty" (1978), "Hysterical" (1983), and "Big Shots" (1987). He has celebrated his 71st birthday as of 2020 and he will be celebrating his 72nd birthday as of 2021 as of 17th October.