What is the sound of a bass without strings? No, that's not a Zen mystery invented to challenge your preconceived notions of existence.
It was a challenge given to bassist YouTuber Davie504 by one of his subscribers. As luck would have it, the electronics in a bass can be made to function in a variety of percussive and semi-musical ways: tapping on the pickguard, snapping the bridge saddles, or using the 1/4 inch cable to produce a square wave-y tone when placed against something metal.
The sounds were then sampled and reconstructed into the impressive jam you hear below.