Kortez (real name Łukasz Federkiewicz) (born on June 24, 1989 in Krosno, Poland) - is a Polish musician, composer, vocalist, guitarist, pianist and trombone player. In March 2015, he released his first EP Jazzboy Session EP, on which he put the songs: "Stay", "Joe" and "What do you think?". On September 25, 2015, he released his debut studio album titled Boomerang, published by Jazzboy Records.