The concept of music existing without any technology, or electrical input, and therefore being truly unplugged seems implausible. For popular music to be classed as popular, suggests that it is heard and liked by many people. The only viable way to have music heard by large audiences is to first record it, which involves an electronic input, even if nothing else is electronically enhanced.
Manu genres of music also rely on electronic technology to create their music, from uses of the microphone, amplification of sound, to an almost infinite number of tracks to record on.
For many artists it is virtually impossible to play a truly acoustic gig, or get a clear recording without microphones or amplification, due to acoustics and projection. The voice, if nothing else is almost always picked up by a microphone and often the instruments will be amplified in some way, even if it's simply a keyboard or electro acoustic guitar, plugged into an amp.
