Slurred Ruff (2010) was used by the NC State and Athens Drive HS drumlines to work on tap sound quality between doublestrokes and single beats. Whether your doublestrokes tend to overpower the single beats, or vice versa, your ears will pick up on it. This warm-up doesn't actually have straight paradiddles in it, but the skills it hits are most related to the other paradiddles warm-ups.
Timing-wise, one tendency seems to be (I don't know why; it's just what I've seen) to tighten up the ruffs on the all-tap bars: i.e. to play something like 1 &a2 &a3 &a4 &a on the single-height bars. A constant doublestroke motion on one hand must be maintained, whether the other hand executes a "buck" motion, or a rebounded "8 on a Hand" motion.
The bass drum part is such that all the written notes could be played as a single unison part.
