Don't Fall

 is a song from the episode "Just Desserts", sung by Robbie Wyckoff, while Phineas, Ferb, Isabella, Baljeet, and Buford ascend their climbing wall.

Lyrics

 * We keep on climbing, climbing like kudzu,
 * A creeping ficus up a climbing wall.
 * A social climber, climbing with debutantes;
 * There's Escanaba, I can see:Montreal.
 * No, I've never been so happy,
 * Felt alive or looked so tall
 * Plus it's also a good aerobic workout
 * Climbing up a rock climbing wall...