Kuba Grabowski, better known by his stage names Quebonafide and Jakub Grabowski, is a Polish rapper, singer and songwriter. He is a member of the duos Yochimu and Taconafide, and the founder of the record label QueQuality. With over 350 thousand albums sold, he is one of Poland's best-selling rappers. His biggest success thus far - the Soma 0.5 mg album, recorded with the rapper Taco Hemingway - has sold more than 150 thousand copies. Also his solo album Egzotyka proved successful, selling over 150 thousand copies. His albums have repeatedly won the status of platinum, gold and diamond records. The rapper has authored such hits as 'Candy', 'Bubbletea' or 'Tamagotchi'. Five-time nominee for the Fryderyk award, with one victory for Soma 0,5 mg in the Hip-Hop Album of the Year category. In 2018, his album Egzotyka was nominated for Empik Bestseller award in the Polish Music category.