Mario & Luigi: Superstar Saga - Joke's End Remix

As much as I love the soundtrack from "Superstar Saga", I've never been a fan of Joke's End's theme due to that short, repetitive melody slowly driving you insane as you work to complete the area's puzzles and get to the top. But unfortunately, like a bad joke that this area supposedly contains, once you hear this song, it's stuck in your head for several hours. Fortunately, there are plenty of enemies in Joke's End, so if you ever feel like the music's getting to you, you can always enter a fight and savor the great battle music before subjecting yourself once more to that auditory torture.
Though I have to say, while there are a number of things about the "Superstar Saga" remake I wasn't a fan of, one thing that it did right was improving the Joke's End theme by adding some instrument variety and toning down the melody.