Hi, justanoldmuso. Thank you for your analysis.

I don't think it's the choice of tempo or style, because I tried with _SLOWBAL ( recommended tempo 60).
The result was the same.

In the style _JAZZSWP, it may sound a bit funny at tempo 62, I agree, but I actually don't mind that.
But I can't stand that jeee noise during the tempo change.
Even if the recommended tempo is 140, my 124 is not that slow.

Regards,
Jazzutako