This was my number one go-to track for Audiosurf back in the day. The way the tempo changes just gives it a great roller-coaster feel, and the beats map with their track detection stuff just so good.
Incidentally, Tropicana was my go-to nap Loop track. Something about it felt like sleeping on a hammock in a construction site, not sure why that was so relaxing.
Only band shirt I've ever bought without seeing them in concert.