Hugh Colin Hopper was a British progressive rock and jazz fusion bass guitarist. He was a prominent member of the Canterbury scene, as a member of Soft Machine and other bands.

Robert Wyatt is a retired English musician. A founding member of the influential Canterbury scene bands Soft Machine and Matching Mole, he was initially a kit drummer and singer before becoming paraplegic following an accidental fall from a window in 1973, which led him to abandon band work, explore other instruments, and begin a forty-year solo career.