Soul singer with The 5th Dimension who released hits in the 1970s, including "You Don't Have to Be a Star (To Be in My Show)" and "Your Love."
He was a lounge owner in St. Louis before joining The 5th Dimension.
He had a television program with his wife called The Marilyn McCoo and Billy Davis Jr. Show.
He married Marilyn McCoo in 1969.
Davis Jr.'s band The 5th Dimension released their first album with Soul City, a label started by Johnny Rivers.