Or instead, use Realband;

In RB -
Right click a Track and pick an instrument to generate.

If you right click an audio track, you can use Genereate Realtrack (or RealDrum track)
Then you can generate a single track of whatever instrument you want.

If it's a MIDI track, Right-Click and use generate MIDI instead.

All you need is a tempo and the chords, and you can open a BiaB file in RB if you need to use the tempo/chords you already have.

I choose Realband over BiaB for this exact need quite often.

Make your sound your own!
.. I do not work here, but the benefits are still awesome