When playing music via bluetooth with the AAC codec in the One UI 6.1 OS, the audio sounds as if it were overly compressed, it is as if the audio track was at 96 Kbps, guitars, cymbals sound very bad. For example, the song I Wanna Love You with Snoop Dogg by Akon; Smells Like Teen Spirit by Nirvana or Don't Cry by Guns N' Roses.

It is better to use SBC codec which is of lower quality than AAC, but the quality improves notably.

And from what I saw in other posts, this has been happening since One UI 5 and no matter if Samsung Fold or Samsung S series, it's apparently an OS problem.

NOTE: I have a Samsung Galaxy S23 with One UI 6.1, Android 14.