I have a SD1. I have in my memory a lot of songs I learned with my old keyboard (Yamaha PSR-740) and I cant play with the sd1. It would be nice to have the Single Finger option in the sd1 to be able to play all that music.Single finger works this way:
Cm is played with C and a black key before. C7 is played with C and a white key before.
Thanks,
Guillermo.