One of electronic music’s rarest synths, the E.M.S. Synthi KB1 keyboard, has been rediscovered by UK company Digitana Electronics.

The one-of-a-kind electronic Music Studios product – which never made it to production – was made by Peter Zinovieff in 1971 for prog rock back Yes.

“We are pleased to announce that Digitana Electronics has acquired an important piece of E.M.S. history..the E.M.S. Synthi KB1 keyboard. Only one prototype was ever made, for the band YES in 1971.

The synth never went into production. It has remained essentially unused for 46 years though Steve Howe (YES guitarist) did use it on a track in the first of his ‘homebrew’ demo recordings, some of which featured on the bands albums.

We plan to release more photos and audio demos of this keyboard in the future so that E.M.S. fans everywhere can finally hear and find out more about this beautiful and historic instrument.”