They are also recorded very differently than Libera. Libera are recorded with a lot of close mic's on the individual choristers and then the final product is mixed in the studio. This choir was clearly recorded more in a classic way of just setting up microphones to capture them as a group with maybe just the soloist(s) having an individual microphone - you can hear this in that they sound further away on the sound stage. It sounds like it may not have even been made in a sound studio but in an actual concert hall that was wired up for recording because they either recorded this in a hall with a lot of echo or added it in the mix afterwards - and not terribly well
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You can hear the piano in the front, the soloist in the front, and then the other voices are way too far back; almost like you're in a concert hall with only medium quality acoustics with the soloist stepping up to a front microphone near the piano as would happen in a live concert.
I think that this definitely impacts how they sound and if they were recorded better it would make a big difference because clearly the choir is not without talent or ability.
This is one of the things about Libera that has always impressed me. They use modern recording and mixing techniques and even the way they set up the sound in a live concert is superior to what most choirs do. This produces a richer sound. Not to mention an exceptional studio recording.
