Tabstrummer is an unusual programmable MIDI controller that’s designed to let you play any guitar tab that can be played on a 12 fret guitar. 12 memory buttons can also be programmed into any of the 300 memory SONG locations of TabStrummers internal memory.
It has a MIDI out connection and an add on MIDI sound shield from Sparkfun Electronics with onboard audio out jack, so you can plug in your headphones or connect it to your sound system or TV audio input.
The strings are PCB traces that are touch sensitive. They are widely spaced on the top of the strum board so you can “pluck” each string.
See the TabStrummer site for details.