GoriLLA蛇L is the 2nd track in the Kill la Kill Original Soundtrack. It is a medley of two instrumental themes.
The first part is characterised by heavy electric guitar and rhythmic percussion, and serves as the theme of Ira Gamagōri. This is the first piece of music heard in the series, debuting along with Ira Gamagōri when he enters enters the classroom in the opening scene of Episode 1.
The second part introduces marching band elements in addition to electric guitar and other instruments. It is heard in a number off different situations.