Kaj Erik Persson Hassle is a Swedish pop singer and songwriter. His career started in 2008 with his first single, "Hurtful", which eventually reached No. 11 in Sweden and peaked at No. 2 in Denmark. His most successful single to date, "No Words", reached the Top 10 of the Global and U.S. Spotify Viral Chart and achieved Gold certification in both Sweden and Denmark.

"Can't Remember to Forget You" is a song recorded by Colombian singer Shakira from her fourth English and overall tenth studio album, Shakira, featuring Barbadian singer Rihanna. Shakira began planning to make new music in 2011: work continued into 2012, at which time she left her previous label Epic Records and joined RCA Records. The song was released as the lead single of the album on 13 January 2014 through RCA Records and Sony Latin Iberia. A solo Spanish-language version of the song, entitled "Nunca Me Acuerdo de Olvidarte", was released on 24 January 2014.