To the OP,

Normally, I wouldn’t feel the need to post this but since we don’t know your OS or anything else about you…

RealBand is Windows only. Because GarageBand is free, the decision was made long ago not to port RB to the Mac.

You will notice that most of us have our “essentials” (OS, BIAB version and year and anything we think others should know etc.) in our signatures. I recommend that you do the same. Click on your name in the upper right corner and you should see how to get to that page. You are allowed 255 characters & spaces and can also upload a picture or avatar.

BIAB 2024 Audiophile, 24Core/60CoreGPU Core M2 MacStudioUltra/8TB/192GB Sequoia, M1 MBAir, 2012 MBP/color]
[color=#FF0040]Digital Performer11, LogicPro
Finale27/Dorico/Encore/SmartScorePro64/Notion6 /Overture5