While working on a project recently, I realized that I needed a metal guitar riff to round out the arrangement. As fate would have it, my go-to guitarist, Shreddward (from the Bright Light Social Hour), was on tour. Since the deadline couldn’t wait, I realized I had to whip up the parts by hand using synths and effects. Naturally, I could have turned to a sample library for this, but I’m always up for a sound design challenge. So rather than rely on loops or a multi-sampled guitar, I decided to start from nothing and see what was possible. Within a few hours, I had some remarkably convincing parts that worked perfectly in the project. Here is the technique.