Hi,
unfortunately I'm not much help on either matter, but your kn does play midifiles. so you should have access to your lyrics as a midifile. Try pressing the following buttons.
disk
direct play
start
lyrics
Maybe it can be done in sequencer too, but if so, I'm not sure how.
As for harmonizers, have you also tried posting the question to the general arranger synthzone forum. Hopefully someone may help you there if no one here can.
best wishes
Rikki