Josh Constine, writing for TechCrunch, looks at a new digital guitar where can basically press a button to play a chord:
You can also freestyle, playing whatever you want. Rock band Muse’s lead singer Matt Bellamy is an investor, and he told me he uses it to write songs since it’s so easy to recreate what’s in his head without fumbling to find where to put his fingers. The guitar automatically records your last 30 minutes of playing so if you discover the perfect riff, you won’t forget it.