If you're using a midi generated bass track, you can edit midi either using the piano roll or notation views.

If you're using Realtracks, freeze all instruments EXCEPT the bass instrument. Then you can write slash chords in the chordsheet view. You can write a slash chord for each quarter note in a bar or measure. Slash chords tells the bass instrument to play the note to the right of the slash.

For instance if the chord is "C" and you want the bass to decrease by one note for each quarter note in a 4/4 bar you would write C/C,C/Cb C/B, C/Bb. Note the commas as they separate the odd numbered beats from the even numbered beats. The slashes instruct the bass track to play C, Cb, B & Bb on beats 1, 2, 3 & 4 of the measure.

Now click on the "regenerate and play" icon. The bass instrument will follow the instructions. The rest of the instruments are frozen so they shouldn't change.

Using slash chords you should be able to get the bass instrument to play a specific note at any beat of any bar. What you can't easily do is tell the bass to transpose an octave. Remember, with RealTracks you are not using samples but are using one, two, four or eight bar audio file splices.

Jim Fogle - 2025 BiaB (Build 1128) RB (Build 5) - Ultra+ PAK
DAWs: Cakewalk by BandLab (CbB) - Standalone: Zoom MRS-8
Laptop: i3 Win 10, 8GB ram 500GB HDD
Desktop: i7 Win 11, 12GB ram 256GB SSD, 4 TB HDD
Music at: https://fogle622.wix.com/fogle622-audio-home