The Settings That Determine Whether It Serves the MusicThe two main controls on most tremolo units are rate and depth; the combination of these controls determines how the tremolo effect is used in a musical context. The most musically helpful tremolo settings are often those that seem somewhat too subtle when heard alone, but are at the appropriate level when heard as part of a larger arrangement. Musical Contexts Where Tremolo Works NaturallyThe best place for tremolo is as a rhythmic element that enhances the surrounding music. Using Tremolo RhythmicallyOne of the more advanced uses of tremolo is to sync the tremolo speed with the music so that the volume pulse falls on the beat and/or the rhythmic grid, producing an intentional effect. It requires lots of listening, copying, and self-evaluation of what is working and what is not in your playing.