May I ask, do you mean all the instruments enter at the same basic time rather than starting with drums, adding bass, etc. to "ease into" a song? If that's what you want, use F5 to mute/un-mute instruments, or use the audio editing for more exact control.

Or, do you mean they all play at exactly the same instant to start measure one, as only a machine could do in real life?

If it's the second, I can tell you I use BIAB for jazz and Latin, and particularly in jazz, the guitar will often enter a fraction ahead of the beat at the beginning of the song. Stylistically, this sounds 'real'. For whatever other genre you may be asking about, I don't know, but it wouldn't surprise me to see this done elsewhere besides the jazz RealTracks.





BIAB 2024 Win Audiophile. Software: Studio One 6.5 Pro, Swam horns, Acoustica-7, Notion 6; Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors