available for the Orchestron: Violin Hammond B3 Flute Cello Vocal choir Saxophone Pipe organ French horn New discs have been made available by Pea Hicks and his team from Optigan.com, as well as remastered versions of the original discs. These new sounds are: Solo trombone Solo trumpet Vibraphone Solo female voice Tremolo electric guitar String ensemble Piano Marimba The violin sound is the most commonly heard, being used by several bands as a type of Mellotron substitute. The choir sound follows in second place and was taken from the Optigan's "Vox Humana" disk, as was the "Cello" sound. The Hammond B3 sound is also taken from an Optigan disk, "Big Organ and Drums". Models Model A – (1974) an updated version of the Optigan (used by Kraftwerk) Model B – (1974) an updated version of the Talentmaker (used by Patrick Moraz / Yes) Model C – (1975) a Model B in a new (black) housing Double C – (1975) a double Model C Model D – (1975) a Model C in a roadcase (from this model on, Viking Keyboard Systems instead of "Vako" was the name of David Van Koevering's company) Double D – (1975) a double model C in a roadcase Model X – (1975) a specially built model for Patrick Moraz (prototype) Model Phase 4 – (1975) a prototype model that blends the disks sounds with built-in synthesizers Orchestrons used in professional recordings Kraftwerk's Florian Schneider bought an Orchestron Model A during their Autobahn tour in the United States in 1975. On the unofficial live album Concert Classics, recorded during their 1975 tour, the instrument can be heard. Ralf Hütter played the instrument on the Kraftwerk albums Radio-Activity (1975), Trans-Europe Express (1977) and The Man-Machine (1978). Patrick Moraz had a special version Model X (1975) of the Orchestron built for him, with three manuals. He used a prototype of it during the recording of Yes' Relayer (1974) album. Moraz also had an Orchestron Model B which he used on his The Story of I (1976) album. His Model X instrument broke and disappeared after being sent for repair. Vincent Gallo played an Orchestron on his When (2001) album released on Warp Records. It can be heard on the track "My Beautiful White Dog". Gallo also owns a working Model A, B, C, D, Double C and Double D as well as the entire VAKO blueprint archives. He purchased