The designer, Martin Molin of Wintergatan (Milky Way in Swedish), built two new instruments and recorded a video where he uses both to perform an original composition titled All Was Well.
The first instrument is a handmade music box with a paper pulling mechanism that uses punched paper-tape to control individual notes.
The second is a “Modulin”:
” I have named this instrument “The Modulin” because i see it as a mix of a MODular syntheseiser and a vioLIN – MODULIN. We will film more videos to explain how it works. I am also building a version 2.0 of this Modulin for stability, it is very cobbled together at this stage and it has broken down on us on stage several times…”
See how the Music Box was built: https://youtu.be/Lf5Qw1kTbzY