I'll (아일) is a South Korean singer-songwriter and musician under MJ Dreamsys. He is the leader, vocalist and keyboardist of the boy band Hoppípolla.
I'll made his solo debut on November 22, 2017 with his first single album "Maybe We Are".
I'll joined JTBC's audition show SuperBand and won with his band Hoppípolla.
The band debuted on November 16, 2019 with the group's first digital single "About Time".