An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without a human pilot on board.

In music, a drone is a harmonic or monophonic effect or accompaniment where a note or chord is continuously sounded throughout most or all of a piece.

This musical realization (Drone 3.1) was electro-acoustically recycled from the audio signature of the General Atomics MQ-1 Predator.

The drone of a drone.

For many people around the world it is the official soundtrack of American foreign policy.

Listen:

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