If you’ve ever wondered, “How does he do that?” when listening to a solo guitarist make it sound like there are six guys playing with him, introduce yourself to the looper pedal. The idea is simple—just record a basic track to establish the rhythm and chord progression, and then play along with it in real time. You don’t need a studio or sophisticated gear. A simple stompbox loop pedal does the trick. Of course, there are plenty of looper pedals with additional features like tempo control, drum sounds, pre-programmed underdubs, and various styles. For the basics, look for these three things.