While it may seem like common sense to prepare for a gig or a recording session, it is amazing how few people actually do it. And, even if they do prepare, they don't always prepare well. If there is one thing to be over prepared for as a musician, it would be a recording session.
Occasionally there are things that fly in a live situation. Sometimes the overall "tightness" of the band tends to mask or gloss over the "little things". In a recording studio, however, these seemingly inconsequential flaws are amplified and exaggerated. Every little scrape of the guitar strings, waver in a vocalist's pitch, or off time kick drum beat will be audible in the studio.
That's not a problem if your intention is to record an album with a "live feel". There are many bands that used to record in the same room simultaneously. This is not necessarily a "bad way" to record, but there are fewer bands doing it. Most bands are overdubbing their parts individually these days (i.e. First, the drums, then the bass, then the guitar, and then the vocals).
The implication here is that you can record the same part an unlimited number of times in order to get your best performance. There is, however, a balance that should be struck with your producer, band, or engineer. Spending hours in a studio isn't necessarily time-effective or cost-effective. Perfection isn't necessarily the result anyone is looking for; it can destroy a project. Consequently, the best thing you can do as a musician is come prepared.
Let's take some time to define what that means. Coming prepared means coming practiced or rehearsed. Certainly it's a good thing if you've had the chance to perform the song (to be recorded) dozens or even hundreds of times. However, that isn't always enough. Bring things back to a basic level. Practice with a metronome (you are going to be playing to a click track after all) at a slower tempo than you're use to performing the song. Listen with a critical ear and notice the little imperfections. Don't be too critical; that can be discouraging. However, practice listening impartially as much as possible. Take the time to notice every nuance of what you are doing.
Typically, it's not hard to separate the beginners from the pros. Beginners will often stop mid-track if they make any kind of error. Pros will keep going until the track is finished, even if they make a mistake, just in case there is anything in their performance that can be salvaged or sparks new ideas. Beginners don't generally bring any ideas to the table. They don't have any notes (it's a good idea to at least make some mental notes about what you are going to do), they don't experiment, and they collapse under pressure. By contrast, the pros will come prepared with a bunch of ideas to explore, keep focused, and generally just try to enjoy the experience.
Finally, how well should you come prepared? An old saying we've always used at Red Flame goes something like this: "know how to play your part forwards and backwards". Practice to the point where you feel you've over-practiced, and chances are it will be just the right amount.
