Don,
I've never used this harmony type before. This is one strange effect. You may have to tweak it a little to get the sound you're looking for.
1. In Microphone Setting under Vocal Harmony Control, Pan the Balance control all the way to Harmony.
2. Select Vocal Harmony Type "Karaoke Girl"
3. Press the '8'[^]'EDIT' button
4. Set Harmony Gender Type: AUTO
5. Set Lead Gender Type: OFF
6. Set Lead Gender Depth: -64
7. Set Upper Gender Depth: +64
8. Set Lower Gender Depth: +64
Don't forget to save it when you get it the way you want it.
Hope you like it.
------------------
Steve Deming
Assistant Manager
Customer Support Dept.
Pro Audio & Combo Division
Yamaha Corporation of America