Agree 100% with 'Notes' ... I'd meant to say as much, but forgot whilst cooking and eating lunch, and he's also covered it better thanb I likely would have.

RealTracks are a great way to get something really good up and running quickly and they do sound good.

MIDI allows the things Notes mentions and allows the use of sophisticated sound engines like the SWAM stuff, Native Instruents, Spitfire, Indiginus and others. Most(?) people will do that in a DAW. MIDA also means one can use instruments that BiaB doesn't have ... I have things like Kora, Digeridoo, Rubab, Oud, Saz.

BiaB's 'default' built-in MIDI synth doesn't sound great, but can be substituted by others(*) or by an external synth.

(*) I use and BiaB ships with VSTSynthFont64 (oddly hidden away, see manual) and there are some excellent soundfonts around.

Mario ... thanks, yes, I was less that fully clear about "same engine".

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
.