Rob,

Record or import a mono vocal track to BB's audio track. Clean, with NO effects, otherwise the TC will add artifacts when it renders a harmony.

The easiest way to get harmonies, select the whole vocal, select a harmony in TC, then render the whole file to SEPARATE wave files in a folder. I use "follow the chords" for the TC setting. Adjust the TC settings on the right to taste. Audition, readjust, audition etc...until you get something you like.

Raise the harmony volume knob and lower the lead in TC when you Generate the file.

Open an audio sequencer and import each wave file, cut out the parts you do not want the harmony on, add effects, mix and render to a stereo wave file.

The key is having a clean, in tune, mono vocal file for the TC to use to generate with.

Trax