OK, it’s beer, not real booze. Sue me.
Via Make:, we find Tuned Pale Ale. I have no idea is Tuned is a great ale. I don’t know if it tastes like pond water.
I. Don’t. Care.
The genius of Tuned is in the label. Look on the right edge and you will see a treble clef with little arrows pointing to a level of the beer within. Drink the ale down to that level, and the bottle will produce that note when you blow across the top. There are a lot of cool songs that you can play with six or fewer notes, ya know?
It’s like a Do-It-Yourself kit for awesomeness like this little performance below, only you don’t have to get as drunk as these guys to get your “instruments” set.

Now, in fact Tuned is more of a super prototype/concept design than a real product. Matt Braun, the creator, is a designer/artist (and DJ!(?)), and apparently a home brewer. He’s actually sold one batch of Tuned, and claims to have another set in production. Visit his site to sign up for your own six-pack. If you are in the beer business (or the liquor business for that matter) and like the idea, he’s also looking for someone with the cash to make this commercially viable. Let’s hope someone does.