His composition was to be based out of samples taken from 20 pianos from around the world, from a piano in a prison to the most expensive piano in the world. To evoke the spirits of these instruments he asked me to design and build an invisible piano.
After going through a number of designs I decided to build a 61 key MIDI keyboard into a table, making the keys flush with the surface and covering them with thin wooden laminate.
The table was big enough for two keyboards, so I built in a second invisible piano so that it could be used for duets as well.
Here are a few photos of the construction, which involved a bunch of laser cutting alongside some good old fashioned hand cutting.