What can you do when no one's got a phone to jamwithyou? Why, you can be a geeky one-man band, of course! Web developer Steffest (just one name, like Sting or Madonna) managed to do just that by strapping a couple of Android devices (possibly an Archos 5 and a HTC Desire), a couple of WinMo handhelds (looks like a HP iPAQ h1940 and a HTC Touch Diamond), and an iPod touch on top of a portable speaker. All this just for a forthcoming presentation on mobile cross development -- Steffest had to painstakingly write the same audio program "in Java for Android, in C# for Windows Mobile and in Objective-C for iPhone." Oh, and it doesn't just end there -- turns out this dude can also pluck tap away a good Neil Diamond classic on this five-way nerd-o-strummer. Get on board and check out the video after the break.