Not the guy you’re replying to, but his description matches my experience.

I can’t hum songs anymore complicated than the “Happy Birthday” song (but if it plays, I’ll recognize it).

I can’t remember people’s voices in my head (but if I hear them speaking, I’ll recognize it is them).

The bang of a fireworks or a car going by is simple enough to recall. It is also generic. I might not remember the hum of the engine of a specific car, or be able to play back a specific fireworks display.