love everyone mentioned but putting Kanye in the same sentence as Dre and Quincy is....
Donuts as a collection of loops...is disheartening

Bias out the way......

The role of producer in music has not changed outside of hip hop/dance music since the beginning

Quincy
Spector
Martin
Meek

They all would qualify under your visionary category

Kanye and Dre both started out soley touching the machine.
They still do...but also incorporate other composers

You know who else did that.....Dilla

This is where my confusion comes in
You have heard Like Water For Chocolate and Electric Circus?

If Ye and Dre are virtusous that dabbled as visonarys...what seperates dilla from that category

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Navem nu, cuando sol
Tutu nu, vondo nos nu
Vita em, no continous non
Nos nu ekta nos sepe ta, amen

When the sun shades the ship
We sweat and life is not safe
To swim or to touch not
When we unite we hedge amen