Radioactive

The harmony of 'Radioactive' is defined by its strict adherence to a single modal loop. Unlike standard minor key pop songs that use the natural minor (Aeolian) scale, this song utilizes the Dorian mode. The presence of the Major IV chord (E major) instead of a minor iv chord (E minor) gives the progression a 'heroic' or 'cinematic' quality often found in film scores. By avoiding the F# (V) chord, the song eschews traditional functional tension and resolution in favor of a constant, hypnotic modal cycle that mirrors the apocalyptic lyrical themes.

The song was written by Dan Reynolds, Wayne Sermon, Ben McKee, and Daniel Platzman alongside producers Alex da Kid and Josh Mosser. It was written during a period when lead singer Dan Reynolds was dealing with severe anxiety and depression; the lyrics represent a personal 'awakening' and the decision to take control of his life after a long period of darkness.

Propelling Imagine Dragons to global stardom, 'Radioactive' redefined the alternative landscape by blending gritty dubstep-influenced bass with traditional rock elements. Its cinematic production and themes of revolution made it one of the most commercially successful genre-crossing tracks of the 2010s.