True but these live tracks have been remixed not remastered.
The two are often confused so forgive me if explain the difference. You may well know already but I have no way of knowing this.
Remastering is where the stereo master tapes are given a good scrub up to make them louder, punchier and more vivid.
Remixing is a term used for two different types of process, (more confusion).
A traditional remix is where we go back to the multi-track tapes (which contain all the individual instruments isolated) and feed them back through a mixing desk and create a brand new stereo mix. In doing so, it allows much more creative control as each instrument can be modified in terms of level, brightness and depth (using effects to create artificial space... reverb etc.).
The results can often sound radically different as no two engineers, or indeed studio set-ups will create the same result. Use a better engineer and or more sophisticated studio and a superior final stereo mix can be created.
This is exactly what has happened with In the Glow. A double album of fresh new mixes which are "remixed".
The other kind of remix is not actually a remix as such, in fact a more accurate description would be a re-make, (version).
This is where "remixers" take a small part of an original recording from the multi-track, (just a vocal and a few key sounds) and create what is effectively a new song entirely themselves using their own instruments and sounds but laying the familiar elements of the material they were asked to "remix" over the top.
I hope that makes sense and doesn't serve to cloud the issue further
