Check out this great video of the Tronical tuning system. This is the same company who developed the self-tuning system found in the Gibson self-tuning guitars, and the technology is now available for almost any guitar. The video features a song written in Open E that changes to Drop C mid song. It’s cool to see how quick the transition is, and how tastefully it’s worked into the composition. Visit Tronical’s website for more info, and especially make sure you go to this page which lists various specific guitar models and the appropriate Tronical units for those axes. And now here’s the video!