According to information from Britneyonline, the track mixing on that service is different from the tidal version. The amazon version used the original multitracks and stems I would be grateful if someone can check all Britney albums and download, post original files. https://music.amazon.com/albums/B004GYP4QQ https://music.amazon.co.uk/albums/B0025DRBAC https://music.amazon.co.uk/albums/B00X7NXE0A https://music.amazon.co.uk/albums/B00WTQ8X5W https://music.amazon.co.uk/albums/B00GPMS06S https://music.amazon.co.uk/albums/B001GTOUR8 https://music.amazon.co.uk/albums/B00J4KEZ7Q https://music.amazon.co.uk/albums/B004TT3DPM https://music.amazon.co.uk/albums/B001GTH72I https://music.amazon.com/albums/B00138CZ60 https://music.amazon.com/albums/B00136NXCC https://music.amazon.com/albums/B00138EVNA
It's not about the service, it's just that they updated and posted a new version somewhere, and left the first version somewhere (in my opinion, it was made by a neural network from a stereo track or something like that). After all, the label does everything, not the platform, but for some reason it is not updated everywhere at the same time.