Shangri-La

 is a song sung by Heinz Doofenshmirtz in Misperceived Monotreme.

Lyrics
Doofenshmirtz: Shangri-La You can live here forever In Shangri-La

Songwriters
BMI Work #13200365
 * Jay Lender

Background information

 * Shangri-La is a city
 * This is the first time Heinz Doofenshmirtz sings in the shower, he will do that again in Phineas and Ferb Interrupted