Opatijsko-mestna župnija Celje hrani v svojem arhivu bogato zbirko glasbenih rokopisov, večina katerih časovno sega v drugo polovico 18. in prvo (nekaj enot tudi že v drugo) polovico 19. stoletja. Ker arhiv v preteklosti še ni bil celostno raziskan, je cilj pričujočega magistrskega dela njegova sistematična ureditev ter izdelava kataloga s pomočjo vnašanja zajetih podatkov v elektronski katalog mednarodne spletne zbirke RISM (Répertoire International des Sources Musicales). Zlasti zaradi prisotnosti pečata jezuitskega kolegija v Gorici se zbirka razlikuje od podobnih muzikalij v vzhodni Sloveniji. Zaključna analiza zbranih podatkov daje prvi vtis o glasbenem življenju Celja in njegovi okolici v obravnavanem času in bo omogočila poznejšo umestitev v širši kontekst tako slovenskega kot tudi širšega evropskega prostora.The archive of the Abbey in Celje holds a substantial number of early music manuscripts, dating approximately to the second half of the 18th and the first half of the 19th Century. Since the manuscript collection has not yet been comprehensively researched, the aim of the thesis was to systematically arrange it and catalogue the data in the online database of the Répertoire International des Sources Musicales (RISM, “The International Inventory of Musical Sources”). Particularly due to the presence of the stamp of the Jesuit College in Gorizia on several of the manuscript copies, the collection stands out among other similar collections from eastern Slovenia. The concluding analysis of the collected data provides a first impression of the musical life of Celje and its surroundings in the 18th and 19th Centuries and will enable its future placement in the broader contexts of both Slovenia and Europe