Hi Jess and welcome to the Forum
As far as I am aware, that is the only way to disable the the Variation change, when you press Fill-In. After all, you either want to use the Music Style Arranger or you Don't
Have a look at Page 64 of your manual, where the function is fully explained. Another useful function within the MSA, is the option to change not only the style variation when the Fill-Ins are selected, but the Panel Memory can also be incremented / decremented at the end of the Fill-In. This option can be enabled by holding down the MSA button until the display changes and then selecting 'Panel Memory' - Very useful - a complete set-up change by just pressing one button

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Willum
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Willum

After silence, that which comes nearest to expressing the inexpressible is Music.
Aldous Huxley
( especially when the music is played on a KN7000....)