Zein (AKA: Kasio) took a fascination in rap at a very young age, covering and performing tracks at his school in front of tens of other kids and building an audience on his Instagram page where a video of him covering Eminem's Godzilla went viral in Abu Dhabi earning him a platform to continue his career doing music. Growing up, Zein started rapping under the name Kasio, producing tracks with different styles trying to find his voice and a formula to stick to.