Dolly Parton, for me, is the one and only Queen Of Country Music, I don't care what anyone else has to say about it either.
Vince Gill said it best when he stated the he envisions the angels in heaven with a voice like that of Dolly Parton.

Dolly Parton has always been one to take chances. She did it all before there was a Shania and a Faith. In the late 70's and early 80's,when she was accussed of abandoning country music for hollywood and pop music, Dolly proudly stated, "I'm not leaving country music, I am taking it with me". And that she did
What country music artist would knowingly and publicly record duets with gay artists and not care what anyone else thinks? Nobody that's who.

I loved Dolly and Melissa Ethridge's CMT Cross Roads episode. If ya missed it, here is a number they did together. Dolly and Melissa singing Melissa's hit Bring Me Some Water

The second link is for the duet that Dolly Parton did with Boy George and Culture Club's song Your Kisses Are Charity. Extremely rare and extremely good.
Enjoy

Bring Me Some Water Dolly Parton & Melissa Etheridge

Dolly Parton & Boy George Your Kisses Are Charity