You probably haven't heard of the Swedish band Wintergatan. It features Martin Molin on bass, Martin Molin on drums, Martin Molin on xylophone... basically, it's not your average band.
Martin Molin is the creator and player of the Wintergartan Marble Machine - a vast wooden contraption that sends some 2,000 marbles scattering around its many tracks and cogs, causing them to "play" a variety of instruments in a programmed sequence. Think of it as the modern answer to an old street organ - but without the monkey dancing around on top.
Having recently finished his machine, and coded a series of musical pieces for it, Molin is preparing to go on tour in the summer.
Check out the final build in action below - and then proceed to marvel at the "making of" video, that gives an insight how complex the 3,000-piece creation is.
And no, it doesn't play Wonderwall.
(Photo: Samuel Westergren)