If I'm understanding you correctly, you want to take a waltz (3/4) song and make it a 4/4 song. BIAB has a feature called "Strauss in a box", that was introduced a long time ago. It is used to move songs between 3/4 and 4/4. It will take a 3/4 MIDI melody and/or soloist and stretch it to 4/4. The selected style will handle the change otherwise.

Just select from the top line menu, "Melody, Edit Melody Track, Form". From there you will see the options to move from 3/4 to 4/4 and from 4/4 to 3/4.

This feature was introduced back in BIAB 2004.


John

Laptop-HP Omen I7 Win11Pro 32GB 12TB SSD
Desktop-ASUS-I7 Win10Pro 32GB 12TB SATA

BB2026/UMC204HD&404HD/Casios/Cakewalk/Reaper/Studio One/Notion/Dorico/Noteworthy/NI/Halion/IK

http://www.sus4chord.com (under rehosting/construction)