I'll

I'll's first feature was for his brother's song, "Shining Love", on May 12, 2015 as Snowman. I'll made his solo debut on November 22, 2017 with his first digital single "Are You There". I'll joined JTBC's audition show SuperBand and won with his band Hoppípolla.

The band released their first digital single, "About Time", on November 16, 2019. On August 9, 2023, I'll signed with CHXXTA Company.