Metroid: Diffusion has a wide variety of themes.
The Super Smash Bros. Brawl remix of Sector 1's theme from Metroid Fusion.
A remix of Upper Norfair from Super Metroid.
Escape from the Volcano Edit
Mother Brain's Theme from Super Metroid with sirens.
Slopes of the Volcano Edit
The Red Brinstar Theme from Super Metroid, unaltered.
Omega Metroid Battle Edit
The Metroid Queen Battle from Metroid II, remixed.
Norion Themes Edit
Norion's theme from Metroid Prime 3.
Generator Room Edit
Tourian from Zero Mission remixed.
Generator Shaft Edit
No music due to upcoming boss battle.
Ridley Battle Edit
Ridley's Theme from Brawl.