Bojan Kolja Goldstein, often credited simply as BOJAN, is a musician and composer associated with contemporary European jazz and experimental music. Originating from Germany, he has been active from the late 20th century into the 21st, working as a pianist, bandleader and arranger. His work blends modern jazz improvisation with elements of classical composition and electronic textures, emphasizing lyrical phrasing, harmonic sophistication and subtle rhythmic interplay. Performances and recordings under his name typically feature collaborative ensembles and a focus on modern chamber-jazz sensibilities, reflecting a thoughtful, composed approach to improvisation and arrangement.