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If you're tired of bananaphones that just make calls, the crew at Gadget Gangster now has a homebrew project to use them for musical escapades. A custom-coded (and appropriately named) Adafruit Propeller board turns a bunch of bananas into the Bananaphone TouchSynth, a synthesizer using the same capacitive touch principles that let a MaKey MaKey turn anything into a controller. The project as it's built won't be rocking stadium-sized crowds anytime soon -- not with those beeps and that lone speaker -- but there's nothing stopping it from scaling up to bigger sounds. Just remember that your fresh beats will turn very brown within a few days.