The RealTracks are made from live studio recordings. Is this a question for copyright? The arrangements made by Band-in-a-Box, RealBand, and PowerTracks are yours, and your songs may be used freely as long as they don't infringe upon the intellectual property rights of others, such as with cover songs. https://www.pgmusic.com/salesfaq5.htm#23

The following add-ons are under PG Music Inc. copyright:

Band-in-a-Box demo songs
Performance Series songs
MIDI Fakebooks (except the Sound Tracks MIDI Fakebooks)
PowerTracks MultiTracks


Best,
Chantelle