It’s true: Mice actually sing, especially when they’re looking for a mate. That’s not anything new. But unlike birdsong, mouse-song is much too high-pitched for humans to hear. So no, it’s not exactly Cinderella-esque, as you can hear for yourself in the above video. But it is shockingly intricate.
God seems utterly delighted with music. While not exhaustive, here a few things to consider
First, it is the mark of a righteous man:
Proverbs 29:6 (ESV)
6 An evil man is ensnared in his transgression,
but a righteous man sings and rejoices.