Interview with Martin Molin, maker of the Marble Machine
Personally I think that he seems like a really nice down-to-earth guy who studied flamenco guitar, was inspired by the Amelie soundtrack, and talked about how music wasn't cool in his Karlstad neighborhood. Wintergatan is the name of the band that Martin is in. As they put it on Wikipedia:
The band became known to a wider audience and was featured in international media with the release of the 2016 music video "Marble Machine", featuring a music box which plays vibraphone, bass guitar, and drums using marbles.Check out the video. Isn't it amazing?