drone
A note held or repeated under everything else, giving the ear a fixed home to measure against.
A note held or repeated under everything else, giving the ear a fixed home to measure the rest against. Drones are ancient (bagpipes, the tanpura, an open string) and instant (a held bass note under a solo), and they make a scale's home unmistakable. Improvisers practice over a drone to hear each note's color.
Learn it: Pentatonic and blues
The one-sentence definition at the top is the same one the Theory Aide extension shows as a tooltip inside Ableton Live. Hover any dotted term for its own.