https://catapult.co/stories/evolving-the-monster-a-history-of-godzilla

"He [Akira Ifukube] visited Tokyo’s Music Conservatory, which housed the only contrabass in the nation. With permission, Ifukube donned a leather glove and gripped and slid his hand down the bass strings. He recorded the sound and put an echo to the recording. What resulted was a roar that would reverberate sixty years into the stomachs of Japanese and Americans, into children across every ocean, waking arm hairs, reconfiguring memories of war and animal gods, alerting us to the living mysteries lying beyond and beneath our horizons."