I have this with auditory things, and visual things as well. Like sometimes I'll notice the sunlight from the window on my ankle and feel such a rush of appreciation for how beautiful it is. I also have the opposite, though, like an innocuous noise (like my dog lapping up water) will suddenly make me feel alarmingly annoyed. But it's nice when it goes the other way.
It definitely happens more often when my symptoms are flaring in general.