'O Hi Mark' is an album about the invasion of Normandy, social media, a Mongolian emperor and the worst movie ever made. Some might call it a conceptual record. Others might not. El Yunque is an experimental music group from Hasselt, Belgium. 'O Hi Mark' is their third full-length album. Written, recorded and mixed by El Yunque. Mastered by Frederik Tack. Guest appearances by Fenne Kuppens (vocals // track 3), Kaat Timmers (vocals // track 2), Michiel De Naegel (clarinet // track 3, 7), Maarten Meukens (piano // track 1, 3, 4, 6) and Hendrik Schreurs (saxophone // track 5)