Zen and Mahayana Buddhism influence.
Imperfection. Simplicity. Transience. Economy. Asymmetry. As opposed to western Apollonian aesthetics.

Three marks of Existence.
Emptiness. Impermanence. suffering.

Wabi sabi style music: http://en.m.wikipedia.org/wiki/File:Shikanotoone_new.ogg

Desolation and solitude.
http://en.m.wikipedia.org/wiki/Zen_garden

Read essay In Praise of Shadows by Tanizaki.

http://blog.lib.umn.edu/ali/2010ema8600/tanizaki_in%20praise%20of%20shadows.pdf

see
mono no aware http://en.m.wikipedia.org/wiki/Mono_no_aware

Found it while listening to The Man In The High Castle.
http://en.m.wikipedia.org/wiki/Wabi-sabi