Karl Rubin is a Grammy-Award winning Producer, Composer, and Pianist based in Los Angeles, California .  He has worked with some of the most prominent artists in the music industry including Justin Bieber , Swae Lee , DRAM , Lil Yachty , 6lack , Kris Wu , and more. 
Rubin is originally from West Palm Beach, Florida . He started to get into music early, playing drums at the age of 10 and keys when he was 18.  His biggest influences are Quincy Jones , Kanye West , Mike Dean , Jay Z , Rick Rubin , Diddy , and Dr Dre .  He moved to Los Angeles, California in 2013 to pursue his music career further. 
Rubin's biggest break came in 2015 when he earned a writing credit on Justin Bieber's song Where Are Ü Now in which he would receive a Grammy.   In June of 2016, he produced DRAM and Lil Yachty 's hit song " Broccoli ."  In April 2018, was listed as the Composer and Producer for Swae Lee 's single "Guatemala."