Stax Records president Jim Stewart didn't like Eddie Floyd's "Knock on Wood" because it sounded too much like Wilson Pickett's "In the Midnight Hour." Stewart didn't release the song until a year after Pickett's hit peaked. Ironically, Pickett and Floyd had been bandmates in the Detroit group the Falcons of "I Found a Love" fame. Floyd and Al Bell had been co-owners of the Safice label. When Bell joined Stax, Floyd followed, becoming a staff songwriter co-writing with Stax guitarist Steve Cropper, the Pickett chart-topper "634-5789." Some believe "Knock on Wood" was originally intended for Otis Redding. The song was written by Cropper and Floyd during a storm (which includes a thunder and lightning reference), when the two began musing about superstition. Cropper asked Mar-Keys horn player Wayne Jackson to help with the arrangement. On the backing track are Cropper's fellow MGs members, keyboardist Booker T. Jones, drummer Al Jackson Jr., bassist Donald "Duck" Dunn as well as pianist Issac Hayes, and co-lead vocals by David Porter and backing vocals by Quincy Billops of the Premiers. Initially snubbed by radio, Al Bell went back to his old base of Washington, D. C., and did promotion work for two weeks before the record began taking off. Produced by Jim Stewart, the million-selling "Knock on Wood" went to number one R&B and number 28 pop in late 1966. Amii Stewart's 1979 version went platinum and became an instant dance classic, going to number one pop and number six R&B.