* "Flop Starz" - This episode features a full-blown musical number performed by Phineas and Ferb as they attempt to become pop stars.
* "The Ballad of Badbeard" - This episode features a pirate-themed musical number with an extended song about the titular Badbeard.
* "The Chronicles of Meap" - This episode features a comedic song about the adventures of the alien Meap, who is trying to learn more about Earth.
* "Isabella and the Temple of Sap" - This episode features a song about a mythical temple that Isabella and her friends go searching for.
* "Candace Loses Her Head" - This episode features a song about Candace's frustrations with her brothers and her attempts to bust them.
* "Phineas and Ferb Get Busted" - This episode features a catchy song about the boys' constant adventures and Candace's attempts to catch them.
* "Across the 2nd Dimension" - This episode features a musical number with a twist, as the characters from the 2nd Dimension join in on the song.
These are just a few examples, and many other Phineas and Ferb episodes have extended songs. The show is known for its catchy tunes and its use of music to enhance the storytelling.