Using audio file backing tracks - whole song or just part by part?

Quick question on using audio file player for backing tracks, mostly to guide my workflow.
Is it easier to record an entire backing track and sync it to the whole song, or to divide it up into segments of audio for each song part?
The audio file player keeps playing as I move from song part to song part, and rack to rack, I think, so maybe just one big backing track file is sufficient. But is that using Gig Performer optimally?

Do you use Multi Instance with Gig Performer?

I’m just beginning to use the app, but yes, I’ve enabled multiple instances and can do that, possibly for vocals or backing tracks. Thanks for the reply!