In my case, I reinstalled BIAB Version 2021 (845) after a disk crash.
I have a song using _JPLMBOS.STY that is 40 choruses of 32 bar length. Prior to the crash It used to take 15s-20s to generate and now it takes 3-4 minutes. Installed to the same disk...Any ideas?
I wonder if you need to whitelist BIAB in Windows defender? I don't think it can hurt to try it and then remove the exclusion if you don't see improvement.
How can I approve an app in Windows Defender? Stop Windows Defender from scanning certain files Open the Windows Defender Security Center. Click Virus & threat protection. Click the Viruses and Threats option. Under Exclusions, click Add or remove exclusions. Click the Add Exclusion button.
Thanks, I whitelisted the entire folder. No change. Is there a temporary folder option that can be pointed to an SSD?
Originally Posted By: MusicStudent
I wonder if you need to whitelist BIAB in Windows defender? I don't think it can hurt to try it and then remove the exclusion if you don't see improvement.
How can I approve an app in Windows Defender? Stop Windows Defender from scanning certain files Open the Windows Defender Security Center. Click Virus & threat protection. Click the Viruses and Threats option. Under Exclusions, click Add or remove exclusions. Click the Add Exclusion button.
What caused the crash, and how did you fix it? Is this the same hard drive? Reformatted? Checked for errors (bad sectors)? Is your anti-virus running full blast to check for errors?
BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Presonus Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.
There are two settings that can cause BIAB to take a long time to generate Realtracks. This would be noticeable if a song is 40 choruses at 32 bars per chorus (a total of 1280 bars).
1) Go into Realtrack preferences and check that "Speed up generation of Realtracks" is activated.
2) Right click on the chordsheet, select "Song Settings" and make sure that the option for "This song has playback problems, disable fast generation" is not active.
These options may help.
Regards, Noel
P.S. There is also an option in Realtrack preferences where it's possible to select the quality of "Tempo/Pitch Stretching". If this is set to "High", it will slow things down a little but not to the extent that you are experiencing.
In my case, I reinstalled BIAB Version 2021 (845) after a disk crash.
I have a song using _JPLMBOS.STY that is 40 choruses of 32 bar length. Prior to the crash It used to take 15s-20s to generate and now it takes 3-4 minutes. Installed to the same disk...Any ideas?
With the 255 bar limit, it definitely cannot be 40 choruses
There is a setting you could check under Song Settings:
BIAB & RB2026 Win.(Audiophile), Windows 10 Pro & Windows 11, Cakewalk Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Session Keys Grand S & Electric R, Kontakt, Focusrite 18i20, KetronSD2, NS40M, Pioneer Active Monitors.
I loaded up the style and the demo song and changed the choruses to 40.
Since there are multiple choices in the demo song, I made sure the demo style had the guitar 2 solo track and clicked generate.
The non-solo portion generated in about 13 seconds and the solo portion took 2:14 to generate for a total of 2:27 to complete.
I then closed BIAB, cleared my temp files and this time loaded the demo song WITHOUT the solo track and it took 17 seconds to generate and play the entire song.
I would say that if you have 40 choruses of soloing to generate, that will indeed add quite a bit of processing time to complete.
2022 version with latest patch on an SSD drive.
BIAB2026 Windows 10 Pro (Never Windows 11!) WA6NCB
I loaded up the style and the demo song and changed the choruses to 40.
Out of interest, how long does the song play for (how many choruses) before it stops playing? Presuming 32 bars per chorus, does it play 1,280 bars?
BIAB & RB2026 Win.(Audiophile), Windows 10 Pro & Windows 11, Cakewalk Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Session Keys Grand S & Electric R, Kontakt, Focusrite 18i20, KetronSD2, NS40M, Pioneer Active Monitors.
My understanding is that the "Number of choruses" is a way around the 255 bar limitation. I think this happens because each chorus is exactly the same and the song doesn't have to generate new material for each bar. I've always visualized that during the generation process, each chorus is stitched onto the previous one to make a kind of audio patchwork quilt. To be honest, though, I've never tried it. I could well be wrong.
It took 38 minutes to play and it did play all 40 choruses with 32 bars.
Someone else needs to try 40 choruses with 255 bars. I'm done with it.
Uh, no thanks. I guess if you wanted to get 38 minutes of practice time in playing the same chord progression over and over this would be a good idea. I imagine you would know the song quite well by the end of that!!
My wife asked if I had seen the dog bowl. I told her I didn't even know he could.
My understanding is that the "Number of choruses" is a way around the 255 bar limitation. I think this happens because each chorus is exactly the same and the song doesn't have to generate new material for each bar. I've always visualized that during the generation process, each chorus is stitched onto the previous one to make a kind of audio patchwork quilt. To be honest, though, I've never tried it. I could well be wrong.
Regards, Noel
This is a revelation, that it actually works to play for 38 minutes.
To your question, I haven't tried this either, but I would expect a few differences. For example, if you had the setting on for Vary the Feel in the Middle Choruses (or whatever like that it's called), then you would have at least two choruses that would be different, or in other words 80 unique measures out of the 255 limit. And I'm assuming the limit is still there, or it would have been quite a major announcement. Something to experiment with, I guess.
BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Presonus Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.
Did you have the song looped? If so, would you have noticed if you weren’t spending those full 38 minutes listening? I’m not trying to be cute here; it’s a genuine question since I’m still trying to figure out what really happens.
BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Presonus Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.
Band-in-a-Box® 2025 for Mac® users: Build 904 now available!
If you're already using Band-in-a-Box® 2025 for Mac®, make sure to grab the latest update! Build 904 is now available for download and includes the newest additions and enhancements from our team.
PowerTracks 2026 is here—bringing powerful new enhancements designed to make your production workflow faster, smoother, and more intuitive than ever.
The enhanced Mixer now shows Track Type and Instrument icons for instant track recognition, while a new grid option simplifies editing views. Non-floating windows adopt a modern title bar style, replacing the legacy blue bar.
The Master Volume is now applied at the end of the audio chain for consistent levels and full-signal master effects.
Tablature now includes a “Save bends when saving XML” option for improved compatibility with PG Music tools. Plus, you can instantly match all track heights with a simple Ctrl-release after resizing, and Add2 chords from MGU/SGU files are now fully supported... and more!
Get started today—first-time packages start at just $49.
Already using PowerTracks Pro Audio? Upgrade for as little as $29 and enjoy the latest improvements!
Band-in-a-Box 2026 for Windows Special Offers End Tomorrow (January 15th, 2026) at 11:59 PM PST!
Time really is running out! Save up to 50% on Band-in-a-Box® 2026 for Windows® upgrades and receive a FREE Bonus PAK—only when you order by 11:59 PM PST on Thursday, January 15, 2026!
We've added many major new features and new content in a redesigned Band-in-a-Box® 2026 for Windows®!
Version 2026 introduces a modernized GUI redesign across the program, with updated toolbars, refreshed windows, smoother workflows, and a new Dark Mode option. There’s also a new side toolbar for quicker access to commonly used windows, and the new Multi-View feature lets you arrange multiple windows as layered panels without overlap, making it easier to customize your workspace.
Another exciting new addition is the new AI-Notes feature, which can transcribe polyphonic audio into MIDI. You can view the results in notation or play them back as MIDI, and choose whether to process an entire track or focus on specific parts like drums, bass, guitars/piano, or vocals. There's over 100 new features in Band-in-a-Box® 2026 for Windows®.
There's an amazing collection of new content too, including 202 RealTracks, new RealStyles, MIDI SuperTracks, Instrumental Studies, “Songs with Vocals” Artist Performance Sets, Playable RealTracks Set 5, two RealDrums Stems sets, XPro Styles PAK 10, Xtra Styles PAK 21, and much more!
Upgrade your Band-in-a-Box for Windows to save up to 50% on most Band-in-a-Box® 2026 upgrade packages!
Plus, when you order your Band-in-a-Box® 2026 upgrade during our special, you'll receive a Free Bonus PAK of exciting new add-ons.
If you need any help deciding which package is the best option for you, just let us know. We are here to help!
Band-in-a-Box® 2026 for Windows® Special Offers Extended Until January 15, 2026!
Good news! You still have time to upgrade to the latest version of Band-in-a-Box® for Windows® and save. Our Band-in-a-Box® 2026 for Windows® special now runs through January 15, 2025!
We've packed Band-in-a-Box® 2026 with major new features, enhancements, and an incredible lineup of new content! The program now sports a sleek, modern GUI redesign across the entire interface, including updated toolbars, refreshed windows, smoother workflows, a new dark mode option, and more. The brand-new side toolbar provides quicker access to key windows, while the new Multi-View feature lets you arrange multiple windows as layered panels without overlap, creating a flexible, clutter-free workspace. We have an amazing new “AI-Notes” feature. This transcribes polyphonic audio into MIDI so you can view it in notation or play it back as MIDI. You can process an entire track (all pitched instruments and drums) or focus on individual parts like drums, bass, guitars/piano, or vocals. There's an amazing collection of new content too, including 202 RealTracks, new RealStyles, MIDI SuperTracks, Instrumental Studies, “Songs with Vocals” Artist Performance Sets, Playable RealTracks Set 5, two RealDrums Stems sets, XPro Styles PAK 10, Xtra Styles PAK 21, and much more!
There are over 100 new features in Band-in-a-Box® 2026 for Windows®.
When you order purchase Band-in-a-Box® 2026 before 11:59 PM PST on January 15th, you'll also receive a Free Bonus PAK packed with exciting new add-ons.
Upgrade to Band-in-a-Box® 2026 for Windows® today! Check out the Band-in-a-Box® packages page for all the purchase options available.
One of our representatives will be happy to help you over the phone. Our hours of operation are from
6:00AM to 6:00PM PST (GMT -8) Monday thru Friday, and 8:00AM to 4:00PM PST Saturday. We are closed Sunday. You can also send us your questions via email.
One of our representatives will be happy to help you on our Live Chat or by email. Our hours of operation are from
6:00AM to 6:00PM PST (GMT -8) Monday thru Friday; 8:00AM to 4:00PM PST (GMT -8) Saturday; Closed Sunday.
Last time I did that, I got yelled at. 
Dansk
Deutsch - Windows
Español
Français - Windows
Italiano - Windows
Nederlands
Polski
Português
Svenskt
русский
Japanese
Simplified Chinese
Traditional Chinese
Korean