The ability to generate Realdrums at double-time and half-time like Realtracks has been on the Wishlist a couple of times. Maybe you can add it again.

The only way I can think of that might work to solve your problem is to set up a drum track at 250 bpm and save it as a Performance File. (A Performance File is simply an audio file that is associated with a track and plays back when the track plays. It's available via the right-click-on-a-track menu. As far as I'm aware, such a file is independent of BIAB's tempo - I could be wrong here, though.)



When the drum Performance File is created, I'd then change BIAB to 125 bpm, halve the number of bars on the chord sheet and generate the instruments.

In theory, the drums as a performance file should be playing at 250 bpm and the instruments should be playing at 125 bpm.

For these to occur in the same tune, one would need to use F5 to have the drums playing the different section tempos. Once that's all set up, then the drums could be saved as a Performance File.

Once that's done, BIAB can be set to 125 bpm and the F5 settings all removed. The instruments could then be generated.

It's worth a try. Let us know how you go!

Regards,
Noel

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Audiophile BIAB 2025