Apple! BURN IT WITH FIRE.

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Actually the artist noted in his comments for the page that while the foreground is iPod/iTunes themed the background is XP's default 'Bliss'.

http://zenpo-huchui.com/comic/vocalo/
背景はピンと来る人には来ると思いますが「iPod」と「iTunes」がモチーフでバックがXP付属の丘です。