Before digital tools allowed composers to simulate any instrument on a laptop, musical scores for TV were simple melodies performed by a handful of session musicians. The newer technology meant those musicians lost their jobs; so did the guy who transcribed the composer’s scores.
However: That doesn’t mean scores require fewer people, or became cheaper to produce.
Today, even the smallest TV shows employ full orchestras. Tech made things easier, but the cost to produce scores for film and TV has only increased. With greater possibilities, more advanced jobs replaced those that were lost.
