And Tom, as for recording an orchestra several times and layering those on top of each other, that process is called “overdubbing.” It is usually used in these circumstances:
1.) The film’s music budget doesn’t allow for a large ensemble. So, you record the ensemble several times and layer the recordings (this is tricky), and it sounds like you have a larger orchestra. This is also common with individual sections of the orchestra (such as the strings, trumpets, etc.). I heard that Jerry Goldsmith used to often do this, but I’m not positive.
2.) The scoring is for a nonstandard ensemble that isn’t practical to record all at once. For instance, Basil Poledouris scored the main title to For the Love of the Game for a double string orchestra. Translation: in a traditional symphony orchestra, the string players comprise half to two thirds of the ensemble. Doubling the number of string players increases expenses enormously, assuming your contractor knew that many string players to begin with, and that the recording studio could fit that many people! So, what they did was record the orchestra playing part 1, and then they recorded the orchestra playing part 2 in a different recording session. After recording, the two were layered together, so you hear 2 string orchestras, but it’s technically the same orchestra playing both parts.
Awesome piece, by the way!
3.) An orchestra doesn’t have to be layered with itself. Hans Zimmer frequently records his scores with a live orchestra, and then he “beefs up” his scores with his own virtual instruments, usually to give his scores that extra power and bite that’s become his signature.
Sometimes, such as in example #2, an ensemble is split to record different parts at different times. For instance, the percussion to the opening battle in Star Wars 3: Revenge of the Sith was recorded separately. Williams recorded the whole orchestra minus percussion and then recorded the percussion itself. I can’t really remember why, but it was probably to give them more flexibility when mixing later. If you listen on the CD version of the battle, the percussion is mixed down or nonexistent for most of the track. But, in the film, there’s a pounding bass drum and the snare drum is a little more prominent.
Also, sometimes, such as example #3, various instruments are added later, after the orchestra has been recorded. Perhaps there will be a synthesizer, special instrument (such as a theremin or guitar or something), percussion, or virtual instruments in the final track, so you record what you can with the orchestra. Then, if you’re recording another live performer, you can isolate them and record them later. Or, if you’re doing what Zimmer does and “enhancing” (if that’s the right word) an orchestra’s performance, you load the recording onto your studio computer and add samples as need be. The same thing goes if you want to add some huge drums via samples, a synthesizer or sequencer, a techno beat, or any number of other things. (Think about “A Burly Brawl” from The Matrix Reloaded ... that’s an amazing combination of strong orchestral performance and heavily integrated techno-style fight music!)
Anyway, a short answer to your question is, yes, dubbing/overdubbing is very commonplace. And again, like a choir, it’s used to achieve different effects. ![]()
Alex Beard, composer
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