The "Music Dimension" is a dimension first seen in the DS version of "Phineas and Ferb: Across the 2nd Dimension (video game)". This dimension comes right after the Desert Dimension.
After the gang manage to defeat Norm, they get enough energy to go to the next dimension
The dimension's platforms are mostly made with musical instruments of many kinds: turmphets, pianos, among others.
- 2-4 (Giant Music Note boss battle)
- 2-7 (Norm boss battle)
- "Phineas and Ferb: Across the 2nd Dimension (video game)" (First appearance)