It was released on 28 September 2014 as the second single from her debut studio album Feline.

Eyre wrote "Comeback" at the age of 16 following a break-up, and summed it up as "about being taken advantage of by somebody that you care about, and then eventually you’re angry about the whole situation but it’s almost like saying 'Fuck it, it doesn’t matter because they’ll come back anyway'.

Eyre then daydreams about going with her friends to his house and wrecking the place, followed by setting his car on fire.

Once the man calls for Eyre's attention as the dream sequence ends, she throws her drink on him and walks away smiling.

Eyre stated that it was an attempt to depict a revenge plot "in a sort of innocent way", taking in a sequence that only happens in the character's imagination how "everybody can feel this way and get so angry at someone you think about how to ruin their life".