"Atomic" was composed by Jimmy Destri and Debbie Harry, who (in the book "1000 UK #1 Hits" by Jon Kutner and Spencer Leigh) stated, "He was trying to do something like 'Heart of Glass', and then somehow or another we gave it the Spaghetti Western treatment. Before that it was just lying there like a lox. The lyrics, well, a lot of the time I would write while the band were just playing the song and trying to figure it out. I would just be scatting along with them and I would just start going, 'Ooooooh, your hair is beautiful.'" The word "atomic" in the song carries no fixed meaning and functions as a signifier of power and futurism. The bridge to, and the break in the melody before "Atomic" is spoken, is heavily influenced by the bridge in the song "I'm on my way" by Dean Parish.