“The Foundations of Decay” is My Chemical Romance’s first new music in over eight years, after their 2013 breakup and the 2014 release of the aptly-named “Fake Your Death.”

Six years after their breakup, the band announced a reunion show on October 31, 2019. Although the show was designed to be a one-off event, several reunion shows soon ensued, ultimately leading to the announcement of a North American tour; however, after the COVID-19 pandemic delayed their 2020 reunion tour, fans wondered if any new music was on the horizon. But, without warning, the single was released on May 12, 2022, exactly a week before the first date of their re-scheduled tour. The song release came with a post on the band’s Instagram account, featuring nothing but the cover art.

Sonically, it draws from a dark heavy rock vibe similar to the band’s 2002 debut album I Brought You My Bullets, You Brought Me Your Love. Additionally, the distant, reverb-heavy vocals are comparable to some of Gerard Way’s solo work. His singing is combined with static noise, electric guitar, piano, and a more “laid-back drumbeat” to form this passionate and anthemic head-banger.

Overall, the song addresses familiar My Chemical Romance themes, including aging, death, and reflections on the apparent decaying state of the world. The song may cover the trauma Gerard Way endured throughout his life, such as his drug addiction, intertwined with the impact of the 9/11 attacks on American society.