Yamaha YPT-420 Owner's Manual page 26

The Easy Way to Play Piano
Next try playing the Chopin Nocturne.
1
The procedure is that same as that described for playing
Ave Maria on pages 23–25. Select "011 Nocturne".
2
Listen to eight measures, then begin playing from the
ninth measure.
Play the keys shown in the illustration. Keep playing F, A and C with
your left hand and the correct notes will sound as the song proceeds.
When you get used to playing the left hand part, refer to "The Easy Way
to Play Piano" on page 23 and try adding the right-hand part.
3
Press the [PERFORMANCE ASSISTANT ON/OFF] button to
turn the performance assistant technology feature off.
The complete score for Nocturne is provided in the separate Data List.
26
YPT-420 Owner's Manual
Nocturne
011