Yamaha SY99 Owner's Manual page 6

The SY99 is composed of a tone generator, a sequencer, and a keyboard. The tone generator is always in either VOICE
node or MULTI mode. The sequencer is always in either SONG mode or PATTERN mode.
INTRODUCING THE SY99
HOW TO USE THE SEQUENCER
HOW TO EDIT A VOICE
VOICE PLAY MODE
VOICE EDIT MODE
MULTI PLAY MODE
MULTI EDIT MODE
SONG MODE
PATTERN MODE
UTILITY MODE
SY99 BASIC CONFIGURATION
REFERENCE SECTION
APPENDIX