"Song of the Rock" is the fifteenth book in Don Coldsmith’s "Spanish Bit Saga" series. The series tells the story of the Cheyenne people and their interactions with white settlers on the American frontier. Central themes include tradition, cultural identity, spirituality, and the natural world.

In this installment, special emphasis is placed on spiritual aspects symbolized by the figure of the Rock, which represents a deep connection between humans and nature. The title “Song of the Rock” signifies the importance of spiritual wisdom, cultural heritage, and the continuity of traditional songs and stories passed down through generations.

The novel explores themes of reverence for nature, spiritual insight, and the roles of spiritual leaders and shamans within the tribe. It follows characters’ personal struggles, spiritual journeys, and their interactions with natural forces.