Fabian Theory is a piece for solo percussionist and an electronic delay/loop system. It was written by Australian composer Nigel Westlake in 1987.

Delay is an electronic effect that creates discrete repeats/echos of the original signal. A delay effect will usually feature three main settings:

• Time - the amount of time between repeats. Can either be set as a specific time (e.g. 500ms) or synced to a BPM

• Feedback - the number of repeats that are generated. 0% feedback will create just one repeat. 30% will create approximately three repeats that fade out over time. 100% will create infinite repeats

• Mix (aka Dry/wet) - the blend between the original signal (dry) and the delayed signal (wet)

• Delay

• Loop

• Mallets

• Metric modulation

• Mixed meter

• Tremolo