Notes said;
"I play rock, disco, big band swing, jazz, R&B, C&W, blues, mambo, merengue, samba, calypso, soca, reggae, beach music, Motown, oldies, new age, smooth jazz, hiphop, dixieland, bubble gum, Broadway, zydeco and one opera song.

I find nothing immoral about any of them."

Your missing the point of the definition and it's not a personal attack on you or your choice of music. You can use a number of topics or scenarios to demonstrate the definition I gave. What you describe in your personal expose of musical styles that you play doesn't meet the standards of the definition of a sell out IMO.

The "moral" part of the definition was coupled with another word "principle". Both of these words are personal attributes that each person develops through their life and become a guide in their decision making process. Some people allow these attributes to control their decisions so much so that they make it known to the world that they would never compromise, not even if someone paid them. "I would never do that!!!!" That's what I mean when I say their has to be a moral declaration. It has absolutely nothing to do with the morality of music. It's a personal declaration and different for everyone.

Little Johnny: "I will never eat my brussel sprouts not even if you let me stay awake till midnight."
That's the declaration.
Dad: "What if I let you stay up till morning?"
Little Johnny: "ok!"
That's the sell out.

Please don't make it anymore difficult than that.