The Codex Sangallensis 484 (Signature Cod. Sang. 484) is an early medieval music manuscript, produced in the abbey of St. Gallen and stored in the Abbey Library in St. Gallen. The manuscript is known for its exhaustive collection of so-called tropes, meaning melodic or textual extensions to previously existing liturgic chants. As this particular manuscript is among the most extensive collections of such tropes from the eastern Frankish kingdom, it plays an important role in the history of music.
