Biografía de Song (iKON)
A song is a musical composition performed by the human voice. The voice often carries the melody using patterns of sound and silence. Songs have a structure, such as the common ABA form, and are usually made of sections that are repeated or performed with variation later. A song without instruments is said to be a cappella. Fuente: https://en.wikipedia.org/wiki/Song_(iKON) (CC BY-SA 4.0)