This is a bit confusing, I see him opening a SGU file but then what's displayed is XML. Is that a Biab file that Biab converted to XML or did Reaper do that?

The idea that other DAW's are encroaching on Biab is very true. I just saw some vids about Studio One 4's new Chord Track, here's two but there are many more:

https://www.youtube.com/watch?v=E_VFYjwnD8E

This one is very basic but he's using the Chord Track to create a brand new bass part.

https://www.youtube.com/watch?v=5iwe7ECDJuU

The guy spends most of the first half of the vid explaining all the mouse clicks, it gets really interesting at the 12 minute mark. First, it has basically the Audio Chord Wizard, then and this blew my mind, it can actually change the chords in an audio file! This is Melodyne territory so I suspect that since Studio One is fully integrated with Melodyne that's how they're doing it but that's just a guess.

This is not duplicating Biab because there's no mention of styles but maybe that's available too, dunno. Still, to be able to detect the chords then apply them to create a brand new track AND then change the chords in both an audio and midi track is pretty good and is definitely getting into Biab territory.

Bob

Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.