Crucial Star is the stage name of South Korean rapper and producer Park Se-yoon.
Born in Seoul on October 16, 1989, he is the son of poet and painter Hang-Ryul
Park. In 2007, he made his official debut as one half of the hip-hop group Libra
Twins when he was just 17 years old. A few years later, he signed with the indie
rap label Soul Company and began performing under the pseudonym Crucial Star.
After collaborating with labelmate Mad Clown on the digital album Mad Clown VS
Crucial Star (2010), he released his first EP A Star Goes Up (2011), which
included the Donutman collaborat...