Band-in-a-box Newbie

When it comes to music software, I must admit I'm not very knowledgeable. Before Tuesday, I had never really tried out Band-in-a-box to see if it could be applied to my teaching. Frankly, I thought it was a strictly band program, and that it wouldn't have any applicable use for my classroom. Now, after having messed around with it for just a little bit and after some discussions that have taken place in Secondary Choral Methods, I have a great use for it! Practice cd's! In the past, I've recorded practice cd's by sitting down and plunking out the individual parts and playing them. How is that teaching my students to be musical? It's not. It's teaching them to be lemmings. If I were to give them practice cd's with just the chords of the song, it would force them to rely on their own pitch memory, and to listen to how their part fits into the chord structure. Not only that, but they might even try improvising a new part over the chords, which I would be thrilled with. I'm sure there might be other ways to implement it into a choral and/or general music setting, but that's all I've got for now. Any ideas out there?