Michael Cooper responds to me:

>>The trait I most appreciate is a side-ways rhythm she often employs..
>
>What is a "side-ways rhythm"?

I thought someone might call me on this one, and I can't say I was looking
forward to it.

In terms of feeling and pulse, it's a rhythm that 'potentially' can induce
the listener to sway or gyrate from side-to-side.  For myself, this is
caused by the artist taking a step toward greater horizontal expressiveness
but in a repetitive manner which gets caught up in and can dominate the
music's rhythm.  On organ, Wolfgang Rubsam frequently plays in this manner.

I can't explain it better than above, but I know it when I hear it.  The
effect is not always positive on me; sometimes, it damages the music's
forward flow.  When the flow isn't damaged, it's an added attraction.

Don Satz
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