I recon this Feakonomics podcast includes the answer amongst other interesting related topics: https://freakonomics.com/podcast/mathematician-sarah-hart-on-why-

I recon this Feakonomics podcast includes the answer amongst other interesting related topics: https://freakonomics.com/podcast/mathematician-sarah-hart-on-why-numbers-are-music-to-our-ears/ https://freakonomics.com/podcast/mathematician-sarah-hart-on... It might be worth a listen for anyone who finds the topic interesting, but the answer is obviously already found in the top response too.