When it comes to music, my tastes are pretty male dominated. I frequently say that my favorite genre is "men with butter voices": John Legend, Guy Sebastian, Stevie Wonder, Marvin Gaye.
But every once in awhile, there comes a female voice that makes me stop, listen, and reevaluate my "Favorites" list. So in addition to "men with butter voices", I also have an ear for "ladies with Sassitude":
We call that Sassy Brass.