This dissertation considers Gervais-François Couperin (1759-1826) and his offertories, providing a performance guide relevant to French organ literature of the beginning of the nineteenth century. To fulfill this purpose, the research is divided into five chapters and a conclusion. Chapter 1 is an introduction explaining the purpose of the research and significance of the research. Chapter 2 presents the Couperin Dynasty and their lineage at Saint-Gervais, as well as the evolution of the musical market in the middle of the eighteenth century in Paris, which influenced Gervais-François Couperin's Offertories. Chapter 3 to Chapter 6 present the performance guide to playing Gervais-François Couperin's offertories: Chapter 3 focuses on the significant development of the French organ building in the 1800s and the registration of Grand-Jeu. Chapter 4 deals with the addition of the pedal, and Chapter 5 focuses on embellishment using tremendo (tremolo) and arpegio (arpeggio). Lastly, Chapter 6 offers a guide for adding manual indications where the score did not include them or in places where ambiguities remained. Synthesizing these elements, a newly edited full score of Gervais-François Couperin's Offertory in G Minor is provided in Chapter 7 to exemplify this dissertation's conclusion.

Music travels across the past in the form of composers borrowing from each other. Such musical borrowings and quotations involve not only the use of melodic materials but also musical structures, texts, symbolism and other types of inspiration. The pre-existing musical idea being used is linked to a specific memory of a particular composer and time. The artistic allusions of composers connect the present and the past. Music also travels across the present and into the future. The outcome of contemporary composers borrowing from each other influences the present period and affects later composers' musical inspiration, i.e., it affects future composers, and therefore, the future. Composers frequently refer to melodies or musical idea from contemporaries and reinterpret them in their own compositions. This is largely because composers do not write in isolation and have been inspired and influenced by contemporary musicians and cultural contexts. However, these musical borrowings sometimes raise questions about the composers' creativity and authenticity. This is largely due to the nature of inspiration and imagination, which determines who or what is original. With this in mind, why do composers still borrow musical ideas despite the risks involved? In what ways do they overcome criticism and demonstrate the …