This thesis consists of a contextual study and critical transcription of five Lamentation settings by the Spanish composer Manuel José Doyagüe (1755–1842), the sources for which were recently found in a unique bound collection of music manuscripts from the University of Santo Tomás, Manila, the Philippines. With the disappearance of most musical sources dating from the Spanish Colonial Period in the Philippines (1565-1898), due to the complete destruction of the walled city centre Intramuros in 1945, the rediscovery of this bound collection entitled “Partituras” is significant, as it indicates the type of repertoire that was possibly known and performed in nineteenth-century Intramuros. The largest group of works by any one composer is five Lamentation settings by Doyagüe, which take up almost a third of the volume. The scores for these works restore incomplete copies held in Spain, and attribute to Doyagüe two settings which were previously unknown. The introduction includes a discussion of the historical and cultural context and the circumstances of the re-discovery in the Philippines. Part I examines the history of the musical activity of the Dominican Order in the Philippines, and considers the possible means of transmission of the manuscripts from Spain to Manila. Part II examines the Lamentations genre and includes a biographical study of the composer Manuel José Doyagüe. Part III is made up of a source study of the manuscripts and a critical edition of the five works, while areas for future research are indicated in the conclusion.