The Department of Music of the Austrian National Library is Austria’s biggest musical archives, and at the same time a modern scholarly research library and the place where most valuable original musical manuscripts are kept. Music manuscripts, printed music, texts of operas and vocal works, musicological writings, recordings, and the estates of important Austrian composers are conserved here and made accessible for study. The ViFaMusik search includes the catalogue data of the sound carriers of the ÖNB (ca. 29,000 records) and of the music prints (ca. 277,000 records, numbers from summer 2014).

BASE is one of the world's most voluminous search engines especially for academic open access web resources. BASE is operated by Bielefeld University Library. It harvests metadata from institutional repositories and other academic digital libraries and indexes the data for searching. In the context of Musiconn a relevant section with more than 60,000 BASE-records has been formed on the basis of Dewey Decimal Classification (DDC).

BMLO is a prosographic dictionary for person in the context of the Bavarian music history. It offers cataloguing tools for music encyclopedias, biographical literature, archival, library, and virtual data sets which refer to the corresponding persons (from the Middle Ages to the present). More information can be found on the BMLO website. BMLO is a project of the University in Munich.

Music catalogue of the Berlin State Library - Prussian Cultural Heritage Foundation (subject section of the online catalogue StabiKat)

The music department of the Berlin State Library possesses one of the most important music collections worldwide. All books, music prints, sound recordings listed in the online catalogue StabiKat can be found via the metasearch of Musiconn. To find books edited before 1909, music prints edited before 1990 or sound recordings up to the publication year 2000, one additionaly has to consult the image catalogues of the music department (http://musikipac.staatsbibliothek-berlin.de/), because these parts of the collection still are not digitized completely.

The British Library is one of the largest libraries in the world with an overall collection of well over 150 million items. The collections of printed music contains material published in every European country, from the beginning of music printing in the late 15th century to the present day.

The Database Information System (DBIS) is a service that records scientific databases. It covers free databases as well as those to be licensed for a particular library or region. Currently more than 13,000 are registered in DBIS. In addition to holdings on CD-ROM and DVD, the database primarily contains online offers, of which 5,664 can be freely used via the Internet (status: December 2019). musiconn includes an excerpt from the field of musicology.

The Electronic Journals Library is a service to facilitate the use of scholarly journals on the internet. It offers a fast, structured and unified interface to access full-text articles online. It comprises 100,260 titles from all areas of research, 22,212 of which are available online only. In addition, 131,023 journals, which are provided by aggregators, are listed. The EZB contains 65,094 journals which are accessible free of charge to anyone (status: December 2019). Furthermore, the participating libraries provide their users access to the journals they subscribe to. The journals are presented in lists sorted by research area. An updated list is generated by the database according to the member library's specifications each time it is accessed. The availability of full-text access is indicated by traffic-light symbols according to the license situation of each member library. musiconn includes an excerpt from the field of musicology.

The German Music Archive of the German National Library is the central collection point for sheet music and sound carriers in Germany and is the nation’s music bibliography information centre. German music publishers and sound recording labels are required to submit two deposit copies of their publications to the German National Library under the Law regarding the German National Library. These publications form the basis of the collection. One copy, e.g. of each item of printed music or music CD, is archived and made available for use at the Leipzig site, whereas the second copy is forwarded to the Frankfurt site of the German National Library. Sheet music and sound recordings from 1993 onwards are also held here. The German Music Archive is housed at the Leipzig site of the German National Library.

The historical scores library of the Bavarian State Opera in Munich belongs to the largest and most precious opera libraries. These holdings with signature group "St.th" (Staatstheater) comprise the performance material of 955 operas from around 1780 until the middle of the 20th century and consist of music manuscripts and music prints (scores, parts, piano scores, libretti, documentary material). It can only be usedon site in the reading room "Music, Maps, and Images" of the Bavarian State Library.

The Bibliographie des Musikschrifttums online (Bibliography of Music Literature online) is an international and interactive bibliography of music literature. This bibliographic reference tool is edited by the Staatliches Institut für Musikforschung Preußischer Kulturbesitz, Berlin, and may be used free of charge. It is the continuation of the printed bibliographic indexes which stop with the volume published in 2001 that contains information on material published in 1988. Currently, BMS has more than 365,000 records of music literature. BMS is supplemented by the OLC-SSG Musicology, which incorporates the contents of some 180 music journals from 1993 onward.

The Library of Congress is one of the most important libraries worldwide. musiconn.search contains a part of the LoC musical sources recorded up to the year 2014. The stock comprises a selection of 270,000 records.

The MusicOPAC at the Bavarian State Library contains catalogue data of scores, sound carriers (DVD, CD, records, and cassettes), AV-material, digital media, microforms, music literature, and music journals including music manuscripts and the special catalogues "Sammlung Her" and "Historical Scores of the Bavarian State Opera".

The data base OLC-SSG Musicology is part of the Swets data base ”Online Contents” that analyses tables of content of subject-related journals, as a rule starting from the year of publication 1993 and ending with 2014.

IMSLP stands for ”International Music Score Library Project” and is the largest digital music library world-wide. It is also called ”Petrucci-Library” in memoriam of the Venetian printer and music publisher Ottaviano Petrucci who invented the sheet music printing at the end of the 15th century. IMSLP contains 98,000 musical works of 13,000 composers in 330,000 digitized scores and 37,000 recordings (as of October 2015). Only the works from those composers who are dead for at least 70 years are integrated into the Musiconn index. These works are copyright-free in Germany and many other countries. This is the case for 64,680 works in ISMLP.

The German RIdIM office took up its work in 1979 and since then has screened collections of museums, archives and libraries in Germany for objects of relevance with respect to music iconography. Forming part of the Arbeitgruppe Deutschland of the Répertoire International des Sources Musicales (RISM), it is located at the Bayerischen Staatsbibliothek in Munich together with the Munich RISM office as a project of the academy programme of the Union of German Academies of Sciences and Humanities (Mainz).

Here you find RISM’s vast collection of musical sources and can freely search among 700,000 entries that contain mostly historical music manuscripts (the majority originated before 1800).The original sources are available fromthe libraries, music archives, and private collections as indicated in the RISM database. These institutions can often be approached for reproductions. This online database is the result of a cooperation between the Bavarian State Library, the State Library of Berlin, and RISM. The cataloguing of the musical sources is being done and is financed by several national and international institutions (see the RISM-website for more information). The RISM Zentralredaktion is a project of the Academy of Science and Literature, Mainz.

The data base “Web Resources of ViFaMusik” analyses scientifically relevant web resources for all areas of musicology. You can find university institutes here as well as different projects and data bases. Besides web resources from universities and libraries, numerous research institutions and private websites are included and freely available text (mostly in PDF-format).