Song files regenerate when you make major changes such as the key signature or tempo. There shouldn't be any sound degradation since the audio will be freshly generated with each change.

Changing the key signature means the Band-in-a-Box song generator selects new material so the performance will be different. Many times a song will sound better in a different key signature than the one that you start with.

You can use tempo to add variety too. When the song tempo is near the upper or lower tempo limit of RealTracks you can alter the tempo just a few beats per minute to cross the tempo threshold. When the threshold is crossed Band-in-a-Box automatically substitutes RealTracks that better fit the new tempo.


Jim Fogle - 2025 BiaB (Build 1128) RB (Build 5) - Ultra+ PAK
DAWs: Cakewalk Sonar - 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