Yeah, I don't mind a jarring shift on shuffle (often I find it kind of fun) but when I'm walking around listening to music or doing basic work tasks I want something that can be a Whole Brain Activity if I want it to be, and when I'm writing I want something that I can push fully to the back of my brain without having it distract at all from the words I'm putting down -- the divide isn't always exactly wordless v with words (some wordless stuff I find compelling enough that it goes on the Walking Around playlist and some stuff that technically has words is meditative enough that it goes on the writing playlist anyway) but that's the most common denominator.