Maurice and Barry alone comprised the Bee Gees on the 1969 album "Cucumber Castle" during Robin's absence as a soloist. They sang the hit "Don't Forget to Remember" (which reached number two on the UK chart while Robin's first solo single, "Saved by the Bell", also reached number two) and follow up singles; "IOIO" and "Tomorrow, Tomorrow" with Barry taking lead and Maurice providing harmony vocals, but the duo version of the group enjoyed dwindling success. A supergroup in 1969 called the Fut was formed at a Tin Tin session and they recorded "Have You Heard the Word" while Gibb was still a Bee Gee, and released later as a single, the band consisting of Gibb on vocals/bass/guitar, Steve Kipner and Steve Groves on vocals with Billy Lawrie also providing background vocals. "Have You Heard the Word" features Gibb impersonating John Lennon by singing the song, and the Beatles fans thought that it was the lost Beatles song which was not released. In 1985, Yoko Ono attempted to register the song as Lennon's composition.