The electronic tanpura is an Indian instrument used as an accompaniment in music practice and performances.
Origin: 1979, India. First invented by G Raj Narayan.
Description: box with buttons or dials to control tone, volume, pitch, scale.
Usage/History: Used to provide a drone sound, substitute for a live tanpura in practice and performances.
Overlaps with electronic shruti box (but shruti box usually plays single chord rather than series of plucked strings)