"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.

Rosalia Vila Tobella, known mononymously as Rosalía, is a Spanish singer, songwriter, producer, and musician. Born and raised on the outskirts of Barcelona, she has been described as an "atypical pop star" due to her genre-bending musical styles. After being enthralled by Spanish folk music at age 14, she studied musicology at Catalonia College of Music while also performing at musical bars and weddings.