system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What does 'remastered' mean in terms of music recording?

Especially with older artists and bands, the word 'remastered' seems to come up a lot. Since I find this term to be a bit vague, could someone explain what this means? What is changed in a remastered recording, and how is it done?
gpt
It can mean a variety of things depending on who is doing it. Remastering an album in a general sense means that the tracks are adjusted from the ground up.  Cleaning up background noise, adding or subtracting particular effects, maybe even re-recording certain sections in some cases.  It can be a good thing or a bad thing, because in some cases, certain dynamic contrasts and effects make the songs sound less full or interesting compared to the original tracks.