This is a piece I started a while ago and finished recently (as I'm writing this). As the subtitle states, it includes the marimba and violin, both of which switch out the melody from time to time (though the violin gets the melody quite often, sorry). I don't play the marimba so I'm not entirely sure the difficulty level, but by the looks of it you'd probably need four mallets to play it. It has a bit of a dancing feeling at parts, and I thought that it sounded fairly Arabian or Middle Eastern, though I'm no expert. Enjoy!