I must confess to not being a huge PR40 fan... I guess for the basic jazz sound, it is tried and tested, but as one from a more rock and R&B background, picking the EXACT perfect moment to ramp up the Leslie is akin to a great singer picking the PERFECT moment to apply vibrato to their voice to lift a phrase or emotion.

It can bring shivers down your spine in a way that almost no other keyboard sound can. The ear has such a strong connection to the human voice, and whatever allows us to get closer to that ideal is always a good thing!

Mind you, that reminds me of an old joke...

What does a German organist do at the most tender, heart wrenching, emotional moment of the entire evening?

He briefly puts the Leslie to slow..!