"Demonyo" was written and composed by Juan Karlos Labajo and served as the second single from his sophomore studio album,
JKL (2017). The track was a significant departure from the singer's earlier pop-teen idol image established during his time on
The Voice Kids, moving toward a more mature sound. In 2018, a new version of the song titled "Demonyo (Redefined)" was released under the artist name "juan karlos", coinciding with the formation of his namesake band. == Composition and lyrics ==