Having lost access to GarageBand over four years ago, I've been working to recompose LotE music on MuseScore for a while now. Anyway, Rush's theme was relatively simple, but it's also very important, as Rush might be even more central to the Exile series than Sparktail. I slowed it down to emphasize Rush's deliberation and conscious decisions. Not sure how it'd work as a battle theme now, though.
Original for comparison