Sorry that didn't work for you. You may also want to do a Return to Factory Settings (Most) and retry.

I created song using the Demo chords for _HUSHPOP.STY and that Style for the first 32 bars. At Bar 33, I replicated your steps to select a different Style - _PICK.STY a heavy metal style so there'd be no mistaking that the style had changed. It worked as expected.

I reset the Style change at bar 33 to a 3/4 Style (HEARTEN.STY) and regenerated and it also worked as expected. Increasing the Tempo did not affect the style change.

I suggest you start a quick test song with 4 bars of _HUSHPOP.STY then change the style to _PICK.STY to determine if there may be an issue with the particular BIAB project you're having trouble with.

Be sure the Settings Apply to setting is on "All Choruses" and that will match my settings. The "Send Patch Changes" box is checked on my Bar Settings page also.

I have attached a screenshot from my test and it shows the 'new' style written out between the two boxes. Your Bar Setting's should have that too.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Screenshot 2023-03-04 145140.jpg (102.71 KB, 104 downloads)

BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.