Xtra Style PAKs generally don't have new Realtracks, but do require you to have the latest UltraPak (or above) version of BIAB at the time of release (so for Xtra Styles PAK 21, you need the 2026 UltraPak or above version of BIAB, since the styles are built upon the RTs and RDs available to date

XPro Style PAKs are really designed for those that purchased the BIAB Pro version (which is the entry level version that comes with a small subset of all the available styles, basically enough to have several different bands styles available across several musical genres). The XPro Styles PAK often contains some additional RTs and RDs to fill the gap in some of the instrumentation. Again the latest XPro requires the latest version of BIAB Pro, and XPro Styles work just fine in the UltraPAK version, as well - it just gives you some additional styles for your toolkit).

Bonus PAKs, 0-PAKs, and 49-PAKs all have additional content (styles, RTs, RDs, etc). Sometimes they end up in future UltraPAK releases, but not necessarily.


John

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