I'm going to elucidate a little on the performance aspect as it may have sounded glib but if I do have an area of expertise then this is it, far more than mixing which is a fairly recent departure that I've taken up since I haven't been able to play for the last few years.
Playing in a recording environment for the last 35 years if nothing else has brought me into close contact with many legends of the British recording scene, and there is a reason that certain studio musicians become legendary and yet often remain relatively unknown as far as being 'out there' public performers, basically it is because playing live and recording are two completely different animals. It's the main reason why you'll have seen an acts album liner notes over the years showing different personnel to the ones they tour with.
So how and why do these same people get called in for session after session and appear on hit record after hit record with careers often spanning several decades? These then are a few of my thoughts on the reasons why that is.
Economy, is a really big factor, these people will get the work because it makes financial sense to get something in the can in a matter of hours rather than days. They don't confuse a recording studio with a rehearsal room. If you are thinking of recording something don't even think about it unless you can play your part, in the bath, hanging upside down from the ceiling backwards or whatever, this isn't such a key thing for the self-recordist as you can hit record and rehearse and you may pick up something good along the way but I still think it is a good idea to 'work up' for a 'proper' take, just imagining you are paying $500 an hour for the priviledge of being recorded should sharpen you up. If it is a band scenario then everyone has to take it to the extreme, make sure everyone can play their part without needing the rest of the band present (they might have to do just that).
Just as a studio isn't a rehearsal room it isn't a stage either, while your drummer may sound fantastic on stage demonstrating all his best fills in EVERY song, when recording very often less is more, make sure everything that's played NEEDS to be there. Repeated breaks throughout a song that is recorded for posterity often sound boring after one or two plays so be strategic with any fills and frills and save them for where a set-peice bit of virtuosity actually does something for the structure of the peice as a whole. It's true for all players not just the drummer anything that isn't supporting the structure is usually better left out, then if you do want to feature an impressive solo everyone will notice.
Another thing to remember if you have the slightest feeling you've fluffed a take, YOU HAVE! I used to waste hours going back and forth from kit to control room to listen to the last take to see if I'd 'got away with it'. The good take is the one you had 100% confidence in when you laid it down. Accept no substitute! Remember if there is a flub, a hesitation, a slight deviation it's been captured forever, just do it again and get it right this time. If you can't get it right it's either because, going back to the other points, you didn't rehearse it enough or you are trying to pull off something that maybe not required.
So a few things there from the FWIW dept. for anyone interested.