Gabriella Polony Mountain's work includes four major themes. The first three themes are clearly recognizable as the Cosmos, Nature, and Figural works with the fourth theme encompassing history, philosophy, and culture. In her life as an artist, Polony Mountain worked with many different medium including mosaics, weavings, sculpture, stained glass, and repousse. Sculpture is a three dimensional branch of the visual arts. In traditional forms of sculpture, the materials used were easily accessible and consisted of stone, metal, wood, ceramics. The process for creating sculpture is as varied as the materials used and include carving, modelling, molded, cast, welded. These days the sculptural form is one with fewer boundaries in terms of material and process. "Man Playing Harp" is a plaster cast sculpture depicting a male figure holding and playing a harp. This piece is part of a series of four sculptures that portrayed figures connected to music.