Varispeed For Tuning

By now, most film scoring studios have the technical possibility to use Varispeed to compensate for the standard a= 442 or 443 Hz tuning of a normal orchestra by recording at a slightly higher sample frequency and tempo than what the actual “target tempo” is to be able to later play it back slower and therefore at a perfect a=440 Hz tuning.

That comes very much in handy for any music that has samples layered on top or additional synth/band elements that are tuned in 440 Hz. However, not every studio has the possibility so far so you want to make sure beforehand.