Mark Wynn is a singer-songwriter from York, working across anti-folk, lo-fi acoustic punk, poetry, noisy pop, humour and spoken word. His performances are associated with a semi-nude stage persona and with live shows that are deliberately unsettling. He is also described as taking a relaxed approach to recording standards.

His work is linked to an aesthetic associated with Mark E Smith and Jacques Dutronc, combining abstract noise with poetic nonsense. He appears under the name Hijak Oscar in the available facts.