This piece is part of a collection of two-mallet solos written by Koshinski, and it primarily focuses on developing dexterity in the left and right hands to the point that they play two separate parts. I remember my father being awestruck while I practiced this piece at home, noting that the piece sounded like it was on “two different wavelengths;” his words summarize about 2/3 of the piece. The other third is a samba-like section that appears in the middle and at the end, which Koshinski included as an homage to maestro José Gramani, a conductor from Brazil known for his expertise on coordinating independent voices.

Caleidoscópio reminds me of the times in my youth when I tried to get my dad’s attention while he was working in his office. Whether I wanted to play with toys or watch a video on a VHS tape, I usually just wanted him to take an hour or two off. I didn’t always succeed, but I like to think that this piece, with its voices phasing in and out just like a kaleidoscope, evokes a playful tone that illustrates my efforts.