I believe this thread is specific to variations, not arrangements.

Unfortunatley there a purists who believe a certain piece of music is intended to be played a 'specific way', format, and structure. Even in the jazz world there are critics and purists ... who disdain the likes Ornette Coleman and Thelonius Monk.

Dixieland ... try adding an accordian to the ensemble, add aplka tempo to the Dixieland standard, Bluegrass try adding a flute to it, add a sweet funk tempo to it ... these variations would never be accepted by 'purists'. It is not the way it is inteneded.
BTW, we added a flutist, and djembe player to our bluegrass group ... sounded fantastic, if not interesting ... but we would be thrown out of the weekly jam for doing it.

sIx