There are two parts in this thesis: an original orchestral composition “Brahma” and its commentary. “Brahma” is a double-wind orchestral composition. The music is in ritual style. The composition is written after my belief, Brahma, the god of creation and one of three dominant gods of Hinduism along with Shiva and Vishnu. Brahma was subsumed as a Guardian until after the rise of Buddhism, and worshiped readily also called four-faced Buddha later in Thailand. Therefore the composition reflects by my personal experience and exploration between music and belief. The commentary is divided into three chapters. Chapter I “Compositional Background and Ideas”, illustrating the compositional background, briefly introducing Brahma, and stating the musical ideas through reviewing my former compositions. There are five sections in Chapter II “Compositional Technique”, which is to analyze the form and the structure of composition, elaborating the style and the characteristic of composition, discussing its compositional techniques in pitch, rhythm, texture, timbre and orchestration. Chapter III “Practice and Goal” discusses the self-actualization, self-examination and rethinking of composing “Brahma”, as well as the future plans for new works.