With all the features of the Axe you sometimes forget to utilize something as useful and powerful as the looper block. From auditioning IR's to isolating harsh frequencies and today, I finally got around to using the 'In USB' from my Mac which was a breeze to setup. I can loop sections of any song or audio/backing track that is on my computer. One thing in particular, that is fun, is piping in EZ drummer to create a groove over a riff idea. Awesome way to start writing riffs and song stems to work from.