Hi John C,

Oddly enough, on Yamaha arranger keyboard's, the LEFT voice settings are stored in "Registration Memory Content's" (acessed by pressing the Memory button on your PSR2100), in the "STYLE" group checkbox, and not with the "other voice settings (Main, Layer, etc) in the VOICE" group checkbox.

If you want to save a style and save the LEFT Hand voice settings as well as the MAIN, LAYER, and other voice settings, you must remember to check both the "STYLE" and "VOICE" box in Memory Contents. If you want to maintain the LEFT voice selection assignment while freely changing styles, here's my workaround solution:
http://www.synthzone.com/ubbs/Forum37/HTML/002610.html

Scott