<edit to remove inaccurate measurement! Will re-measure> </edit> I listened to another Tidal album: https://tidal.com/track/1365738 Forgive my recorder still being set at the parsimonious 16/48 setting; I expect the dither noise I see in this spectrogram to be my recorder's addition (something to check later, as I'm curious now), but this EMI recording (part of Sony's music group) doesn't appear to exhibit any watermarking. It seems whatever watermarking Sony implemented (as suggested above, if they actually implemented anything) seems much more innocuous than UMG. I will move on to UMG now. And as an aside: aren't stringed instrument harmonics beautiful??