Instrumental Solo,Keyboard - Digital Download SKU: A0.496668 By Daniel Boman. By Daniel Boman. Contemporary. Individual part. 6 pages. Published by Daniel Boman (A0.496668). Inspired by a trip to Kartchner Caverns in Arizona, this duet for piano and flute explores the life cycle of a natural cave, from the first droplets of water to its final collapse. This is the solo piano version of the piece as it was originally composed.