This is really cool!
Quoting the Vimeo page:
Björk commissioned several custom instruments for the shows surrounding the release of 'Biophilia' - one is a hybrid gamelan celeste; the original steel bars of a vintage orchestral celeste were replaced with bronze tonebars hand-made by UK cymbalsmith Matt Nolan, and the instrument was rebuilt and MIDIfied by Iceland's top organ-maker, Björgvin Tòmasson.
This is a 2-minute brief montage of the making of the 'Gameleste'
Camera: Andy McCreeth
Editing: Andy McCreeth and Matt Nolan
Soundtrack Music: Matt Nolan