Whoa! Check this out from MusicAlight!

“We have designed a sleeve with LED lights that wraps around the guitar neck underneath the strings. It has special cut holes to allow the standard frets to be used. LED lights are attached near each fret of the guitar. As you begin learning, the LEDs light up below the string you should hold to play the correct chord in a song. The tempo can be turned up or down to allow you to learn at the speed you want. Each song or chord can be added seamlessly through our website or directly from your computer. We have programmed a guitar tab parser that allows you to convert standard text tabs into our custom format so you can start learning your favorite songs instantly.”

Wanna see it in action?