guitar tool like it needs another hole in the ozone layer, but in all seriousness, this one is stupendous. Er, it exhibits remarkable potential, considering that it's not yet beyond the concept stage. Designer Eugene Cheong has dreamed up the Maestro, an attachment that can supposedly be adapted to work on any guitar (of the electric variety, we presume) and teach you what frets to mash in order to actually become a halfway decent player. Put simply, the device accepts MP3 files via SD card, and then it breaks down the tunes into tablature which can be displayed via lasers. Once you see the beams lighting up your fretboard, you mash / strum in order to keep up and "learn" the songs. We can only hope this thing adds a slowdown mode should it ever hit store shelves, 'cause even the amateur probably doesn't want to tackle select Dream Theater tracks at full speed.