The purpose of this thesis is to provide an analysis of the musical and non-musical elements that were used to compose RIVER, an original suite for jazz orchestra. It is also a means by which I can reflect on the process of composing a large form, multi-movement work. The challenges that a project like this poses for a writer are both exciting and formidable. I will discuss RIVER in terms of its melodic, harmonic, and rhythmic elements. Form and orchestration will also be factored into the conversation covering the six primary movements and referencing the interludes as they apply to the general analysis. The opportunities to grow as a composer from this project are not to be overlooked. I have come away with a greater understanding of the writing process, as well as my strengths and weaknesses.