Sum and Substance unveil ambitious new single ‘Mighty’ ahead of debut EP

Montreal math rock innovators Sum and Substance return with ‘Mighty’, the first preview of their debut EP, arriving April 25.

Blending intricate guitar work with memorable melodic hooks, ‘Mighty’ draws from the emotional pull of midwest emo and the precision of progressive math rock. Angular rhythms, tapping-driven passages and shifting time signatures collide with an accessible core, marking the band’s first fully through-composed piece. The result is a dynamic, carefully constructed song that balances technical complexity with genuine immediacy.

Lyrically, the track explores legacy, ego and the search for meaning. Referencing the 1817 poem Ozymandias, the band reflect on the fragility of fame and the illusion of permanence. Rather than chasing recognition, ‘Mighty’ urges listeners to look inward, suggesting that authenticity and self-awareness ultimately outlast surface-level success.