In the video comments Bob Doyle states he has been a Band-in-a-Box user for a couple of years. That's great!

He also said one of the reasons he purchased the Band-in-a-Box 2024 Ultra+ upgrade was to use the harmonizer feature. Unfortunately he is not pleased with the results of the 2024 harmonizer like he was able to obtain using the harmonizer with previous versions of Band-in-a-Box. That's bad.

Quote
I haven’t been happy with the harmonies it’s been creating in version 2024 compared to older versions so until I get that sorted out I’m not featuring that (Record Audio) yet, since that’s really the only way I’ve used the audio recording feature.

Perhaps Bob's comment should be taken as a hint that a PG Music tutorial just about using the 2024 harmonizer would be helpful.

Jim Fogle - 2025 BiaB (Build 1128) RB (Build 5) - Ultra+ PAK
DAWs: Cakewalk by BandLab (CbB) - Standalone: Zoom MRS-8
Laptop: i3 Win 10, 8GB ram 500GB HDD
Desktop: i7 Win 11, 12GB ram 256GB SSD, 4 TB HDD
Music at: https://fogle622.wix.com/fogle622-audio-home