IncipitSearch

The Servizio Bibliotecario Nazionale (SBN) is the library network of the scientific libraries in Italy. The union catalogue OPAC SBN comprises entries to more than 15.000 musical sources.
The data is licensed with CC-BY 3.0

The digital, thematic-systematic register of all works of Christoph Willibald Gluck (GluckWV-online) is part of the Gluck-Gesamtausgabe (GGA) and draws upon the findings of the editorial-work and the decades of research of the project. The goal is the comprehensive and systematic listing of all compositions by Gluck in all their versions as well as the compilation of important data on the formation, the premier, the first edition, and the reception of individual works with the according references.

The Répertoire International des Sources Musicales is an international inventory of musical sources and - with over 1,100,000 records - the world's largest database of musical sources. The goal of RISM is to record historic music material, especially manuscripts originating between 1600 and 1800, and to make it accessible and searchable. A search for musical incipits is implemented in RISM since 2011. The inventory provides information on the places of storage of the manuscripts, description of the source, as well as further metadata.
The data is licensed with CC-BY 3.0