This part of our FAQ also goes over the differences of what can be done in Band-in-a-Box, RealBand, and PowerTracks and how they differ from one another: https://www.pgmusic.com/salesfaq1.htm#6

While you can make songs from scratch by recording into Realband (and you can also load styles and generate RealTracks into the program), I always suggest starting out in Band-in-a-Box and moving to RealBand once you've got your arrangement laid out. I just find it provides a better workflow that way, but that's just personal opinion on my part.

Here's a video that actually goes over making a song in RealBand: https://youtu.be/En9Jq948m7w


Cheers,
Ember