Little Machines' opening track is a result of an experimentation with poetry. Lights explained during a Reddit AMA: "For a stretch I wrote a poem a night in attempt to free up my mind lyrically, and the first track on the album, Portal, is a direct result of that! Poetry to song."
Lights added that she wrote the song during a very frustrated, uninspired time. "I felt like I lost my knack for writing, I was angry it wasn't coming easily, sort of like I was losing my purpose," she said. "It was sort of a cry for something sure during a time that I had a lot of questions."
"Kickstart My Heart" is about all the ways Motley Crue gets their blood flowing without drugs. It was inspired by their bass player Nikki Sixx, who claimed he had to be revived with a shot of adrenaline to the heart after an overdose.