Scott..so that means Leigh was correct..

If the vocal sounds are similar to Roland's ..they may be 3 or 4 cross faded sounds...and a sustain pedal could easily pick up the velocity overlap..and cause a problem with polyphony...Most likely the newest added sounds that require 3 or 4 cross fades..may be the least priority reserve..Ian mentioned that the Tyros3 and 4 have this now...Maybe not quite as good as the Roland format..