Yes! The startup sound is part of the long history of the Mac. It’s entirely nostalgic for me and always reminds me of the sense of wonder I felt when I first used a 128K Mac.
Just the other day my mind was blown when I learned that the startup chord was inspired by the chord at the end of A Day In The Life from Sgt. Pepper's. Source? The guy who created it: https://www.youtube.com/watch?v=5838mfezO8M
A Day In The Life (time link to a few seconds before it hits at 4:21): https://youtu.be/usNsCeOV4GM?t=249