Here's some free ones, but you may already have Kontakt you can use.
http://www.vst4free.com/free_vst.php?id=2310
http://www.dskmusic.com/dsk-choirz/

Dropbox BB_Choir.mp4


In BB > Prefs > Chord Output
BB Chord Output will also save in the Midi file "MID" File on Disk, Biab > File > Import > Melody from MIDI file > 9 only, then load the vocal VSTi in the Melody track.
In Realband/DAW you will see the BB Chord Output track.
In the Piano Roll window you can transpose the octave of the BB Chord Output midi up or down to suite the range,
Ctrl+Shift+1 = Down Octave
Ctrl+Shift+2 = Up Octave
edit the midi by highlighting the notes and holding the shift key to trim/adjust/move/delete notes,
use shift also to adjust all selected midi note velocities at the same time,
right click to copy note to duplicate and paste.



Mac BB Output Chords To Midi Track

Interesting concept...DropBox link not working, btw

Should be working, try again.

Cheers