“Let It Go” is an anthem of self-acceptance, the story of somebody learning to embrace the thing that makes them different.

The song was performed in its original show-tune version in the film by American actress and singer Idina Menzel in her vocal role as Queen Elsa. It was later released as a single, being promoted to adult contemporary radio by Walt Disney Records in January 2014.

The phrase "let it go" is repeated a total of four times in each chorus, embedding it in the listener's brain. Repetition is key to making a pop song catchy, says Christopher Wiley, senior music lecturer at the University of Surrey in England. "That 'Let it go, let it go,' it's so evocative," Wiley says.