So is the wav file you drag in empty for the first 28 bars ? If you are just dragging the tracks into Reaper you would be best to just drag them from the main Biab app.
Thank you for your reply. For example, in a 32 bar BIAB song
The wave tracks dragged in are complete as well as the song sheet being complete in the BIAB VST. No gaps or empty bars.
When I press play in Reaper, the song starts in Reaper at bar 1 and plays the BIAB WAVs properly.
If I generate the tracks in BIAB VST (and not drag any of the BIAB WAVs), when I press play in Reaper, the BIAB VST jumps to bar 29 and starts, instead of bar 1.
If I press Play in BIAB VST, the song does start at bar 1 in BIAB VST.
So triggering play in Reaper causes the BIAB VST to start at bar 29 of a 32 bar song. I have tried this on a different song, the same thing happens but the Reaper start causes the BIAB VST chord sheet to jump to bar 22 to start.
I want to be able to record a guitar track in Reaper but follow the chord sheet in the VST.
Not sure why it's starting on 29, you have got a Sync offset you can try setting to -28 ?
What you are describing should not be happening. I can only suspect it is a Reaper setting which is causing the start of playback at Bar 29 instead of Bar 1. Reaper can be set to start playback from any bar. Check your Reaper Project Settings.
Thanks for the replies. Reaper Start Measure is set to start at 1
Setting the Sync Bar Offset to 29 now allows Reaper start to sync BIAB VST. So at least I can use this for now.
The problem is that every song will have to have a different offset.
In addition, it seems that when I engage Reapers Metronome, no matter what I set Count-in Measures to in Reaper, it no longer properly syncs at start. There is a lag of 1 to 3 measures before BIAB starts. I have tried this with 1 and 2 measures in Reaper, and adjusting the BIAB Sync Bar offset up and down by 1.
So the best I can do is not use a count-in measure but at least I can now jam using the BIAB VST.
I purchased BIAB a couple of years ago when the VST was first introduced and felt like I was beta testing it, so I haven't touched it until I purchased the 2023 version a couple of days ago. I am hoping that the current problem is fixable on my system.
What you are saying sounds crazy. Can you tell us what version of BIAB and the BIAB VST you have? Also can you upload the BIAB file (.mgu) so we can test?
As an update, I spoke to the Live Chat and in order to get close to syncing, I had to set both Reaper and BIAB properties to Run As Admin (Windows 10).
Although this got me very close, I later found I need to have Reaper's Play cursor starting on Bar 2 (with the Reaper's Start Measure set to 1) and when I hit Play on Reaper, BIAB immediately jumps to Bar 2 and stays in sync. At the end of the BIAB Song, both will loop to Bar 1 and stay in sync for multiple loops. There does seem that BIAB VST is late by a 1/8 note or so, especially noticeable on very slow-tempo songs.
However, if I have Reaper's play cursor at Bar 1 and press Play, BIAB starts out of sync and the BIAB Sync Bar Offset just makes it worse so it is set to 0.
Not the end of the world for what I need but still not ideal.
Hi gwp99! Would it be possible for you to upload some screenshots or (better yet) a screen recording of the problem? I have never heard of such behaviour in the plugin so it would be helpful for me to see your setup and process in order to try and reproduce/fix the problem on my end. You could attempt to upload the content here or email it to me directly at aguy@pgmusic.com.
I am glad you got Adar to check into this. I do understand workflow using BIAB, BIAB-VST and Reaper is important to getting it all working smoothly. Also the fact that BIAB always likes to put those two bar lead-in clicks which are not always needed. So I can see where the synch may be an issue at times. But I can tell you with my workflow this has never been a problem.
XPro & Xtra Styles PAK Sets On Sale Now - Until May 15, 2026!
All of our XPro Styles PAKs and Xtra Styles PAKs are on sale until May 15th, 2026!
It's the perfect time to expand your Band-in-a-Box® style library with XPro and Xtra Styles PAKs. These additional styles for Band-in-a-Box® offer a wide range of genres designed to fit seamlessly into your projects. Each style is professionally arranged and mixed, helping enhance your songs while saving you time.
What are XPro Styles and Xtra Styles PAKs?
XPro Styles PAKs are styles that work with any version (Pro, MegaPAK, UltraPAK, UltraPAK+, or Audiophile Edition) of Band-in-a-Box® 2025 (or higher). XPro Styles PAKS 1-10 includes 1,000 styles!
Xtra Styles PAKs are styles that work with the UltraPAK, UltraPAK+, or Audiophile Edition of Band-in-a-Box® 2025 (or higher). Xtra Styles PAKs 1-21 includes 3,700 styles (and 35 MIDI styles)!
The XPro & Xtra Styles PAKs are not included in any Band-in-a-Box® package.
The XPro Styles PAKs 1-10 are available for only $29 ea (reg. $49 ea), or get them all in the XPro Styles PAK Bundle for only $149 (reg. $299)! Listen to demos and order now! For Mac or for Windows.
The Xtra Styles PAKs 1-21 are available for only $29 ea (reg. $49 ea), or get them all in the Xtra Styles PAK Bundle for only $199 (reg. $349)! Listen to demos and order now! For Mac or for Windows.
Note: XPro Styles PAKs require Band-in-a-Box® 2025 or higher and are compatible with ANY package, including the Pro, MegaPAK, UltraPAK, UltraPAK+, and Audiophile Edition.
The Xtra Styles require the UltraPAK, UltraPAK+, or Audiophile Edition of Band-in-a-Box®. (Xtra Styles PAK 19 requires the 2025 or higher UltraPAK, UltraPAK+, or Audiophile Edition. They will not work with the Pro or MegaPAK version as they require the RealTracks included in the UltraPAK, UltraPAK+, or Audiophile Edition.
Supercharge your Band-in-a-Box today with XPro Styles PAKs and Xtra Styles PAK Sets!
With the release of Band-in-a-Box® 2026 for Mac, we’re rolling out a collection of brand-new videos on our YouTube channel. We’ll keep this forum post updated so you can easily find all the latest videos in one convenient spot.
Whether you're exploring new features, checking out the latest RealTracks or Style PAKs, this is your go-to guide for Band-in-a-Box® 2026.
Band-in-a-Box® 2026 for Mac is here and it is packed with major new features! There’s a new modern look, a GUI redesign to all areas of the program including toolbars, windows, workflow and more. There’s a Multi-view layout for organizing multiple windows. A standout addition is the powerful AI-Notes feature, which uses AI neural-net technology to transcribe polyphonic audio into MIDI—entire mixes or individual instruments—making it easy to study, view, and play parts from any song. And that’s just the beginning—there are over 100 new features in this exciting release.
Along with version 2026, we've released an incredible lineup of new content! There's 202 new RealTracks, brand-new RealStyles, MIDI SuperTracks, Instrumental Studies, “Songs with Vocals” Artist Performance Sets, Playable RealTracks Set 5, two new RealDrums Stems sets, XPro Styles PAK 10, Xtra Styles PAK 21, and much more!
Special Offers
Upgrade to Band-in-a-Box® 2026 for Mac and save up to 50% on most upgrade packages during our special offer—available until May 15, 2026. Visit our Band-in-a-Box® packages page to explore all available upgrade options.
2026 Free Bonus PAK & 49-PAK Add-ons
Our Free Bonus PAK and 49-PAK are loaded with amazing add-ons! The Free Bonus PAK is included with most Band-in-a-Box® 2026 for Mac packages, but you can unlock even more—including 20 unreleased RealTracks—by upgrading to the 2026 49-PAK for just $49.
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.
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.
Dansk
Deutsch - Windows
Español
Français - Windows
Italiano - Windows
Nederlands
Polski
Português
Svenskt
русский
Japanese
Simplified Chinese
Traditional Chinese
Korean