I don’t know about you but I wish I learned how to play the guitar when I was younger. The good news is even if you don’t know how to play it, you can get a robot to do so. Take MegCell’s Arduino Robotic Guitarist for instance: it is a self playing guitar robot that uses your PC or smartphone to process music sheets. You can control it with WiFi.
This robot uses metal gear smart servos. The developer is also working on a robotic arm that can play drums on an iPad. You can find out more about this project on Kickstarter.