As the title suggests, Chad Heiny’s Coming of Age attempts to narrate a coming-of-age story where the solo marimba part depicts the main character responding and evolving to an ever-complicated world, depicted by the percussion quartet. The harmonic language used in the piece is tense at times but ends optimistically, as if looking forward with hope to the future. The solo marimba part is definitely achievable by a decent high school marimbist but was also written with the intermediate to advanced undergraduate player in mind.