The Duo Concerto Trumpet and Organ, Op.152 by Tomas Svoboda was written in memory of and commissioned by the friends of the late Richard Thornburg, second trumpet of the Oregon Symphony. Through the use of primary sources, Tomas Svoboda, composer and organist at the premiere, and Fred Sautter, principal trumpet of the Oregon Symphony and trumpeter at the premiere, the performance guide illuminates the piece with a discussion of five different topics. Chapter 2 of the guide reveals the circumstances of the commission and the initial compositional process. Chapter 3 discusses the performance history of the concerto, including the premiere. Chapter 4 provides analytical insights with programmatic titles accompanying the formal layout of the piece. Chapter 5 presents the piece from the standpoint of performance preparation. Chapter 6 concludes the guide with final thoughts of the composer, Tomas Svoboda. The guide provides the performer studying this piece the historical context of the concerto and highlights programmatic elements of the piece not apparent in its published form.