Guess the 1960s song lyrics #57

1965. This song sold 3 million copies worldwide. It was on the charts 18 weeks and was namd the #1 song of the year even though it never hit highter than #2. This song was a reworking of a 1962 song "Hully Gully Now." The song has Tex-Mex influence. The band was known for wearing camp robes and turbans and hauling their equipment in a 1952 Packard hearse with maroon velvet curtains. The group name was inspired by The movie The Ten Commandments and a joke about the lead's lack of singing ability.