List of songs/Season 4

Key
= Included in the Phineas and Ferb soundtrack

= Included in Phineas and Ferb: Across the 1st and 2nd Dimensions

† = Included in the Walmart Exclusive Edition of Phineas and Ferb: Across the 1st and 2nd Dimensions

= Bonus Track on the Phineas and Ferb soundtrack, or Phineas and Ferb Summer Belongs to You!, or the Phineas and Ferb Holiday Favorites, or Phineas and Ferb: Across the 1st and 2nd Dimensions

= Extended Song

‡ = Included in Phineas and Ferb: Rockin' and Rollin'