Hello,
with entry-type "Style" you can not select an Sb-Entry with the current KbdSounds.

Thus soft transitions, notes holded or playing continously is not possible, as the KbdSounds are interrupted automatically by ugly bumps. This is caused by an faulty function of StyleToKbdSet with the setting "off".

That function only works satisfactory in StylePlayMode. In the songbook this function works incorrectly, because with Sb-Entry-Type "Style" automatically is loading KbdSet#1 - that only should happen if StyleToKbdSet is "ON", but also happens if "OFF".

Maybe it is ok to initialize settings in sb-mode in case of sb-entry-typ "Song" also with StyleToKbdSet=Off. It will not disturb because each song is stopped before next will start - but that is not with sb-entry-typ styles that are made to be played continuously even the sb-entry is changed.

I hope function StyleToKbdSet will be updated with next OS, to be useful reasonably with entry-typ style.

Manual Pa1000 Page55: Letting Styles choose the Keyboard Sounds
Choosing a Style might automatically choose Keyboard Sounds. This depends on the STYLE TO KBD SET indicator (KBD SET = Keyboard Set):
Off = Styles do not select a Keyboard Set, On = When choosing a Style, Keyboard Set 1 is automatically selected.

Wow that's a detailed analysis and write-up. You should post this on the Korg Forums and try to tag Paolo Trammanoni in your post. He used to be really good about acknowledging these types of bugs and getting them fixed in subsequent releases.

Thanks and good luck!