This is pretty cool - it's a musical composition using applications from several different handheld devices. I only ever thought to play games on my DS, so I'm quite impressed.
Fun!! I did something like this back in 1981, using three or four (I forget...) Tektronix 4051 graphic calculators. Someone had written an assembler program (Motorola 6800) to play musical scores on the 'beep' speaker (control was switching Vcc on and off - binary).
I hacked the GPIB signal interface so that all the boxes thought they were the controllers, and rewrote the score of "Fur Elise" to harmony, and got the trio or quartet to play Fur Elise in harmony.
Only problem I had was that the machines got slow when they played 16th notes, so I had to fudge the timing on the scores to accommodate in the other machines that were playing longer notes.
I was delighted to get a fairly successful Fur Elise playing in the end.
http://gameboyzz.prv.pl/
I hacked the GPIB signal interface so that all the boxes thought they were the controllers, and rewrote the score of "Fur Elise" to harmony, and got the trio or quartet to play Fur Elise in harmony.
Only problem I had was that the machines got slow when they played 16th notes, so I had to fudge the timing on the scores to accommodate in the other machines that were playing longer notes.
I was delighted to get a fairly successful Fur Elise playing in the end.