Originally dubbed “Calling You/Gunfire” by the fans, “42” was confirmed as a TLOP5 track when it was performed during Pi'erre’s set at Rolling Loud 2020. It’s named after the legendary baseball player Jackie Robinson, who wore the number 42.

Pi'erre first previewed an early version of the track on October 28th, 2020 on his Twitter, and later played an updated version on his Instagram Live, December 28th, 2020. However, the sample from the Instagram Live version is no longer on the track.