Instrumental Duet Instrumental Duet,Marimba,Vibraphone - Level 3 - Digital Download SKU: A0.1015880 Composed by Sean Evans. Standards. Score and parts. 10 pages. Sean Evans #4988491. Published by Sean Evans (A0.1015880). This is a marimba and vibraphone duet that tells the story of two travelers who are in pursuit of the breathtaking view of the northern lights, or the aurora borealis. Northern Aurora is a jolly and somewhat romantic duet that is challenging while giving off the vibe of being in the travelers' shoes as they encounter challenges along the path towards the top of a mountain to view the aurora borealis.