Progeny is my contribution to Sara Mast’s ‘Soundings’ a collaborative multimedia project that explores the construction of shared identity within four generations of our own family through the lens of my grandfather’s legacy. Gifford Morrison Mast (1914-1972) was an early pioneer of American industrial design, an inventor, a physicist, and an optics expert with a particular interest in stereo optics. During a trip to Bozeman, MT in 2013 I composed these seven pieces of music using recorded interviews of my family members. The central character of these stories is my late grandmother, Beth Mast, who shared with us many memories and stories of my grandfather. Although many of the pieces are abstract representations of the time I spent with my family uncovering these stories some of the pieces are more explicit and paint a picture of my grandfather that I hadn’t seen before.