YES... it's possible.

As was mentioned... using the Chord Wizard function in BB... sometimes this works well, and other times..... not so much.

The important thing is to get that first 2 measure count in set properly so it syncs once it's sent to BB.

It generally takes me a few tries to get it right when I use the ACW.

It really, really helps if you know:

1. the actual BPM of the track AND it's recorded on the full number beat.... such as 95BPM as opposed to 95.7BPM.

2. The point where the beat occurs so you can line it up exactly to the beat in BB.

Is it easy to do? Well, I think if I used it all the time it would become easier. I have a few songs that I created the backing tracks for and all I had was a vocal track..... but again, I knew the BPM and that made it relatively easy to do.

These 2 songs were done that way:

http://soundclick.com/share.cfm?id=12638204 In A World Without You

http://soundclick.com/share.cfm?id=11903190 I Know You're Up To It.

Both were simply vocal tracks.... I did what you are asking about and used BB to make the music behind the vox.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.