Siren
Speed comes first in this fierce combination, then cleanliness, then attitude. Finish every line while you learn it. Do it with full-out lengthening rather than full-out energy, and the body remembers where each arm and leg ends.
Once it's clean at speed, turn up the performance. The tone is sassy and fierce, and the music has twinkly sounds to catch with quick jazz hands. A lot of weight changes sit in the middle, so how you shift matters as much as where you step.