To begin with Jim, you need to try out most country & pop styles. Arrange a tune that you want backing for even 16 bars to get you going. If you don't have the new real track styles, try some of the classical styles ( marches etc... ) for Scottish tunes
Now, here comes the fun part. Load different styles for the tune and have only one going as a solo. Mute all the rest and see which one comes near to what you're after. Piano, bass, drums 2nd accordion & fidde are the usual line up for a Scottish band. The rehearsal showtunes piano style is on the newer releases of biab and is included in the newest release. I've found that using the tango drums ( speeded up ) in the real drumming syle disks are great for Scottish Marches & reels. Just don't look for anything entitled 4/4, it ain't there. The only thing biab doesn't do yet is good 6/8 styles for us Scottish folk.