Since I really dislike iTunes 11's new icon, I decided to retouch the iTunes 10 icon so it fits nicely with the Mac App Store icon. It also matches the iOS iTunes icon now :)
It's not perfect, and it's not optimized at smaller sizes, but in my opinion it is by all means better than the official iTunes 11 icon. Enjoy!
EDIT: the actual attached .icns is a little less pink and a little more purple than the one in the screenshot — thanks for the feedback!
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