Convolution reverb is awesome because it allows you to place your music inside a digital recreation of a real acoustic environment, from a jazz club to a majestic cathedral. This is possible by using an impulse response, which is a recording of a peak transient (usually produced by firing a starter’s pistol or popping a large balloon) in a real acoustic space. But wait, who says you can only use convolution to produce reverb? Actually, nobody. You can use any recording as your impulse response. You might use a recording of one acoustic or electric instrument to convolve a recording of another. As an example, you might use electric guitar feedback to process a vocal or a vocal performance to process a guitar. The results are limited only by your imagination!