"KLK" is a song recorded by Venezuelan musician Arca featuring vocals by Spanish new flamenco singer Rosalía. Written by both of the performers in Barcelona, Spain, the track was released on 22 June 2020 through XL Recordings and Columbia Records as the fourth single off Arca's fourth studio album Kick I.

"Relación" is a song recorded by Panamanian singer and songwriter Sech. The song was released on April 1, 2020 as the second single from his sophomore studio album 1 of 1, released a month later. It was written by the performer alongside its producers and Joshua Méndez and Ramses Herrera. The track was produced by Jorge Valdes and Miguel Andrés Martínez, better known as Dímelo Flow and Slow Mike. "Relación" became a top ten hit in Panama, Argentina and Spain as well as a very popular song on TikTok. In the United States, the track made it to the twenty-second position on the Bubbling Under Hot 100 Singles chart.