"heart skips a beat" was written by alex smith, preston, jim eliot and rizzle kicks. it is the only song murs did not co-write for the "in case you didn't know" album. of the track, he said: "it was a curve ball and nothing like anything else on the album, but i loved the production and the writers wrote it for me." the song had originally been put forward for his debut album but murs' team held it back in order to launch his second album "in case you didn't know", with rizzle kicks being implemented on the track two weeks before the final version was made.