This short film is actually an advertisement for Japanese mobile phone company Docomo, but it's nonetheless hard to resist: a linear musical instrument designed by Drill Inc. is played by the descent of a wooden ball as it slowly rolls down track, sending xylophonic plinks and plonks out into the forest.

[Images: A linear wooden forest instrument playing Bach, by Drill Inc. for Docomo].

Landscape-scale musical instruments are an unfortunately under-explored typology. We need more wave organs and forest xylophones, more Aeolian harps and conspiratorially whistling infrastructures.

(Via @pruned and Colossal).