Be sure to add me to your favorites list Function Map Sheet for the Yamaha QY20 Portable Midi Music Sequencer, Original Yamaha Quick Lookup Info Sheet. This is an additional reference sheet for the Yamaha QY20. It is the Function Map for the Yamaha QY-20 MIDI Music Sequencer. This is in very good condition, and is a quick reference guide for programming and playing your QY20. This sheet is a 2-sided reference card so you don't have to flip through the manual all the time. It is seen here folded up. This would also be helpful for the QY22 model as well, as it is very similar in performance. Original Yamaha sheet printed in Japan in the early 1990's. Very helpful with your QY! This is a manual or document, this is NOT a piece of equipment or instrument. If you have any questions, I'm always happy to answer them. Thanks for looking! Check out my Store!