I did the same, using vkeyboard on Linux, which simulates a MIDI device. Another benefit of the Axis49 is the pressure sensitivity, of course. My infant daught

I did the same, using vkeyboard on Linux, which simulates a MIDI device. Another benefit of the Axis49 is the pressure sensitivity, of course. My infant daughter loves it, too :-) For live performances, there are also keyboards with custom layouts (although 1-dimensional) by http://www.verticalkeyboards.com http://www.verticalkeyboards.com