Boss Alpha

Boss Battle 1 is a theme from Metroid: Samus Returns. It is an original composition by Daisuke Matsuoka and is not remixed from Metroid II: Return of Samus.

Description
Boss Battle 1 is very tense, relying on dissonance to create a feeling of unease. Its instrumentation consists largely of synths and other electronic instruments.

Boss Battle 1 plays during encounters with standard Alpha Metroids on the Surface, Area 1, and Area 2. However, the later encounters with Evolved Alpha Metroids use a different, more aggressive theme.

Boss Battle 1 can be heard here: