Could someone point me to an explanation of the technical process that allows realtracks to get used to make a backing track? From a high level I imagine a recording being made of a trumpet player, which is incorporated into a realtrack (whatever that means), then I type a page full of chords and select a style that has that trumpet player on it, and poof, I get a backing track that I can play along with. Is there an explanation somewhere of how this is done? It seems quite baffling how the transition is made from taking whatever the trumpet player originally played, and modifying it to fit my chord progression.
tnx