Clif,
in the Roland EM2000/G1000/G800, the Dynamic Arranger fucntion indeed affects the style. Like Tony said, depending on the velocity of the left hand, the 8 accompaniment parts will play at different loudness (or drop off compeletely). Once you learn how to use it, it does add quite a bit of variety to the accompaniment sound.
Regards,
Alex
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Regards,
Alex