Hi,

Jazz & Big Band is tricky to use in Band-in-a-Box, mainly because it is not a GM synth, BB only supports using one VSTi at a time, and also JABB wants some special controllers to use some instruments properly. It is more suited for use in RealBand, where you can have more control over the MIDI messages you are sending it, and you can assign different synths to different tracks.

Regarding the Acoustic Bass styles... we welcome suggestions for new styles. If you have some specific style suggestions, make sure to post those in our style wishlist section, preferably with some specific song examples that we can listen to. The Jazz Bass styles all have a special RealTracks entry called '2 only', which is much less busy, but perhaps you are looking for a different style of playing.

Andrew
PG Music Inc.