Ketron Arranger lock, Bass lock & Drum lock

diki.....this looks very interesting almost like a CS feature......

a newer XD9 function called 2nd Lock. It does just what the other lock functions do.
Sixth is the Bassist on/off. I don't play good enough left hand bass to need this up top, but the way it works is extremely useful. With this function selected, the left hand play a manual bass line below the split and the right hand triggers the chord changes if you play more than two notes. After playing a three note chord you can then solo over it with your right hand without changing the chord until you play another three note chord. Absolutely not for beginners.