I wrote Double Tap (2010) on one fine evening when I got stuck on NC State's campus during a snowstorm. They had a showing of Zombieland for students, so after fleshing out this warm-up in the dorms with a couple buddies, it was pretty obvious what I should call it.
It's styled after the very "stock"-sounding double beat warm-ups that generally centre on some sanford-esque pattern, but I wanted to incorporate different hand speeds, as well as an emphasis on the eighth-note pulse within a triplet roll.
While this piece was never used and would prove difficult for a line of typical skill, it is nonetheless worth taking a look at.