Jam Pack 1 instruments?

First, I apologize to those of you who've already answered this question a bazillion times. I'm new to GB and recently upgraded to iLife '09 and added the Symphony Jam Pack. I've read on various websites about Jam Pack 1 -- which supposedly contained a software version of a Bösendorfer Grand Piano? Can anyone tell me a.) if there is such a thing and b.) whether or not it's included in one of the current Jam Packs or c.) if it's not included in one of the current Jam Packs, is Jam Pack 1 compatible with GB '09?