Pray for them as they do this, since the long studio hours are very tiring. The impression is that your last performance wasn't good enough. Of course when recording, it becomes difficult to tell when something is satisfactory. However when recording, it's not always a question of getting your personal best, as much as it is getting the best . To make it even more difficult, there is a real focus shift in recording versus live worship because in a recording, mistakes are magnified over time.
Someone pops in a CD and the first listen is great.
But after the third or fourth listen, the listener begins to notice that the singer is a little flat here, and the drummer misses a beat there. Keeping that in mind, a producer has to decide what to go for, what to try and what to keep. So, we set the drums to a click track with the right tempo, and let someone speed and slow the click for certain parts of the song - that way everyone could be certain we started the song with the exact tempo for every take. Not everyone can attend a recording session. But, you can still take a virtual tour of the August recording sessions.