It sounds like you might be changing the notes of the bass on the Bass track.
Steve has asked if the bass is a Realtrack or a MIDI track. It's a good question and the answer to it is important.
1. If the bass is a Realtrack, the notes on the bass track are notation. They do not tell the Realtrack what to play. The tell the BIAB user what notes the Realtrack is playing. The reason Realtracks cannot be changed is because they are audio files and are fixed.
2. If the bass line is MIDI, and it's on the bass track, every time the song is regenerated, it will create a new bass line. If you want to save a MIDI bass line, make sure to freeze the track.
Thanks Noel. So how do I determine if it's midi and how do I freeze it. And maybe a question as to why it would generate a new bass line each time? That does not make sense to me. If, as a band leader, I tell the bass player "That was a great base line you played, let's do it that way." And then he plays something different each time we play the song...the arrangement goes to the landfill.
So how do I determine if it's midi and how do I freeze it. And maybe a question as to why it would generate a new bass line each time?
Midi tracks show up yellow in the BIAB mixer on the chord sheet. real tracks show up green.
Biab can generate different versions of each track part and may well generate a new version if you have changed any thing in your tracks so that they still flow nicely together. You freeze a track by clicking on the snow flake on the mixer track you want to freeze if you really like it. Mike
Is it possible that the style is defining the instruments? If so changing them may have no impact when you reload. There are several places where you can ensure that your changes are retained.
BIAB for Windows Version 2019 (643) Windows 10 (1909)
Got to the chord sheet and sure enough, it was midi, How can I change from Real tracks to midi. Also, when I finally got to the chord sheet, I couldn't get out of it, back to the regular view, whatever that's called.
Use CTRL+T to switch views between full-screen and standard views.
Also, to answer you above question about why BIAB generates differently each time is because it's designed as musical backing software.
In the scenario you gave to your bass player, while you might have isolated a riff or something and asked the bassist to keep that in the performance, most of the performance would have involved the bassist keeping the same feel for the music and not always exactly the same notes. This is how ensembles who don't have every part fully notated tend to operate. BIAB works on this principle.
If you want to set Stylepicker just to show MIDI styles, this can be done by using the filter. (Follow 2, 3, 4 on the image below.)
Last Chance! The Band-in-a-Box® 2026 for Mac® Special Ends Today (May 31, 2026) at 11:59pm PDT!
Time really is running out! Save up to 50% on Band-in-a-Box® 2026 for Mac® upgrades and receive a FREE Bonus PAK—only when you order by 11:59 PM PDT today!
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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 amazing new AI-Notes feature, which can transcribe polyphonic audio into MIDI. View the results in notation or play them back as MIDI, and choose whether to transcribe an entire track or transcribe specific parts like drums, bass, guitars/piano, or vocals. There's over 100 new features in Band-in-a-Box® 2026 for Mac®.
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, and much more!
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Band-in-a-Box® 2026 Mac Special Offers Extended Until May 31st!
Good news- we've extended our Band-in-a-Box® 2026 for Mac® special offers until May 31, 2026!
Band-in-a-Box® 2026 is packed 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 transcribe 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, and much more!
There are over 100 new features in Band-in-a-Box® 2026 for Mac®.
When you order purchase Band-in-a-Box® 2026 before 11:59 PM PDT on May 31st, you'll also receive a Free Bonus PAK packed with exciting new add-ons.
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Today's the Last Day of the Band-in-a-Box 2026® for Mac Special!
Order before 11:59pm PDT today (May 15, 2026) to save up to 50% off your Band-in-a-Box® 2026 for Mac® upgrade and receive a FREE Bonus PAK loaded with great new Add-ons to use with this new version!
Band-in-a-Box® 2026 for Mac - Special Offers End at 11:59pm PDT on Friday, May 15th, 2026!
Order before 11:59pm PDT on Friday, May 15th and SAVE up to 50% on most Band-in-a-Box® version 2026 for Mac Upgrade packages... and that's not all! With your version 2026 for Mac purchase, we'll include a Bonus PAK full of great new Add-ons FREE! Upgrade to the 2026 49-PAK to receive even more NEW Add-ons including 20 additional RealTracks... that's 222 NEW RealTracks available with version Band-in-a-Box® 2026 for Mac!
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Learn more about the Free Bonus PAK and 49-PAK here.
If you have any questions about which package is the best option for you, just let us know. We're here to help!
202 New RealTracks Released with Band-in-a-Box 2026!
With Band-in-a-Box® 2026, we've released 202 incredible new RealTracks (in sets 468-488) in a variety of genres—featuring your most requested styles!
Jazz, Funk & World (Sets 468-475):
Our new jazz, funk & blues RealTracks include a groovin’ collection of RealTracks and RealDrums! These include more requested “soul jazz” RealTracks featuring artists Neil Swainson (bass), Charles Treadway (organ), Brent Mason (guitar), and Wes Little (drums). There are new “smooth jazz” styles (4), which include a RealTracks first: muted trumpet, as well as slick new smooth jazz brushes options for drums. Blues lovers will be thrilled—there are more “classic acoustic blues” styles, including guitar (5), bass (4), and drums (10) with blues master Colin Linden, featuring understated and tasty background acoustic soloing, plus brushes drums and acoustic bass. There are also new electric blues RealTracks, including electric blues with PG favorite Johnny Hiland (3) and soulful electric slide guitar from Colin Linden (4). If you love funk & gospel, there are great new options this year, including gospel organ (3) from Charles Treadway, as well as new funk, tango, and rock ’n’ roll drums (3) and bass (1). And for big, bold arrangements, we have uptempo soul horns (4) featuring a three-part hip horn section with options for a full mix or stems of each individual horn — plus an accompanying rhythm section (4) of drums, bass, guitar, and electric piano!
Rock & Pop (Sets 476–482):
Our new rock & pop RealTracks bring a powerful mix of requested favorites, fresh genres, and modern chart-inspired styles! We have more of our popular “Producer Layered Acoustic Guitars (15)” featuring Band-in-a-Box favorite Brent Mason. We’ve continued our much-requested disco styles (10), and added new Celtic guitar (5) with a more basic, accessible approach than our previous Drop-D or DADGAD offerings. There are also highly requested yacht rock styles (17), inspired by the smooth, polished soft-rock sound of the late ’70s and early ’80s — laid-back grooves, silky electric pianos, warm textures, elegant harmonic movement, and pristine production aesthetics. Fans of heavier styles will love our new glam metal (13), capturing the flashy, high-energy sound of ’80s arena-ready guitar rock. We also have a set of rootsy modern-folk rock (18), with a warm, organic sound combining contemporary folk textures and driving acoustic strumming. And we’ve added lots of new modern pop styles (16) — the kinds of sounds you’re hearing on the radio today, featuring exciting new drums, synths, and cutting-edge RealTracks arrangements.
Country, & Americana (Sets 483–488):
Our new country & Americana RealTracks deliver a rich collection of acoustic, electric, and roots-inspired styles! We have new country pop (9) with legendary guitarist Brent Mason. There is also a potpourri (14) of bouzouki, guitars, banjo, and more, perfect for adding texture and character to contemporary acoustic arrangements. We’ve added funky country guitar (5) with PG favorite Brent Mason, along with classic pedal steel styles (5) featuring steel great Doug Jernigan. There are more country songwriter styles (8) that provide intimate, rootsy foundations for storytelling and modern Americana writing. Finally, we have “background soloing” acoustic guitar (12) with Brent Mason — simpler, but still very tasty acoustic lines designed to sit beautifully behind vocals or act as a subtle standalone solo part.
And, if you are looking for more, the 2026 49-PAK (for $49) includes an impressive collection of 20 bonus RealTracks, featuring exciting and inspiring additions to add to your RealTracks library. You'll get new country-rhythm guitar styles from PG Music favorites Johnny Hiland and Brent Mason, along with modern-pop grooves that capture today’s radio-ready sound! There are also new indie-folk styles with guitar, bass, 6-string bass used as a high-chording instrument, acoustic guitar, and banjo. Plus, dedicated "cymbal fills" RealDrums provide an added layer that work very well with low-key folky styles with other percussion.
The 2026 49-PAK is loaded with other great new add-ons as well. Learn more about the 2026 49-PAK!
2026 Free Bonus PAK & 49-PAK for Band-in-a-Box® 2026 for Mac®!
With your version 2026 for Mac Pro, MegaPAK, UltraPAK, UltraPAK+, Audiophile Edition or PlusPAK purchase, we'll include a Bonus PAK full of great new Add-ons for FREE! Or upgrade to the 2026 49-PAK for only $49 to receive even more NEW Add-ons including 20 additional RealTracks!
These PAKs are loaded with additional add-ons to supercharge your Band-in-a-Box®!
This Free Bonus PAK includes:
The 2026 RealCombos Booster PAK:
-For Pro customers, this includes 27 new RealTracks and 23 new RealStyles.
-For MegaPAK customers, this includes 25 new RealTracks and 23 new RealStyles.
-For UltraPAK customers, this includes 12 new RealStyles.
MIDI Styles Set 92: Look Ma! More MIDI 15: Latin Jazz
MIDI SuperTracks Set 46: Piano & Organ
Instrumental Studies Set 24: Groovin' Blues Soloing
Artist Performance Set 19: Songs with Vocals 9
Playable RealTracks Set 5
RealDrums Stems Set 9: Cool Brushes
SynthMaster Sounds Set 1 (with audio demos)
iOS Android Band-in-a-Box® App
Looking for more great add-ons, then upgrade to the 2026 49-PAK for just $49 and you'll get:
20 Bonus Unreleased RealTracks and RealDrums with 20 RealStyle.
FLAC Files (lossless audio files) for the 20 Bonus Unreleased RealTracks and RealDrums
MIDI Styles Set 93: Look Ma! More MIDI 16: SynthMaster
MIDI SuperTracks Set 47: More SynthMaster
Instrumental Studies 25 - Soul Jazz Guitar Soloing
Artist Performance Set 20: Songs with Vocals 10
RealDrums Stems Set 10: Groovin' Sticks
SynthMaster Sounds & Styles Set 2 (sounds & styles with audio demos)
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