Here some resource to get you going:

International Standard Book Number (ISBN)
An ISBN is essentially a product identifier used by publishers, booksellers, libraries, internet retailers and other supply chain participants for ordering, listing, sales records and stock control purposes. The ISBN identifies the registrant as well as the specific title, edition and format.
https://www.isbn-international.org/agencies

International Standard Recording Code (ISRC)
ISRC enables recordings to be uniquely and permanently identified. ISRC helps to avoid ambiguity and simplifies the management of rights when recordings are used across different formats, distribution channels or products. The ISRC for a recording remains a fixed point of reference when the recording is used across different services, across borders, or under different licensing deals.
https://isrc.ifpi.org/en/get-isrc/apply-now

International Standard Name Identifier (ISNI)
ISNI is the ISO certified global standard number for identifying the millions of contributors to creative works and those active in their distribution, including researchers, inventors, writers, artists, visual creators, performers, producers, publishers, aggregators, and more.
http://www.isni.org/content/isni-registration-agencies

ASCAP, American Society of Composers, Authors, Publishers:

http://www.ascap.com

ASCAP is a membership association of more than 400,000 U.S. composers, songwriters, lyricists, and music publishers of every kind of music.

CERLALC, Centro Regional para el Formento del Libro en América Latina y el Caribe:

http://www.cerlalc.org

CERLALC is the Regional Centre for the Promotion of Books in Latin America and the Caribbean. It was founded in 1971 as a result of an agreement between the UNESCO and the Government of Colombia.
In the book sector, the organization formulates, encourages, and supports initiatives of Latin American and Caribbean nations. Some of its main aims are: improve the book infrastructure in general (production, dissemination and distribution of books), help to develop and coordinate the book market, support book and reading promotion activities.
CERLALC has been very helpful regarding the establishment of ISBN agencies and the introduction of the ISBN system in the region.

CISAC, The International Confederation of Societies of Authors and Composers:

http://www.cisac.org

CISAC works towards increased recognition and protection of creators’ rights. As of June 2010, CISAC numbers 229 authors’ societies from 121 countries and indirectly represents around 3 million creators and music publishers within all the artistic repertoires.

DOI, International DOI Foundation:

http://www.doi.org

The Digital Object Identifier (DOI) is an identification system for intellectual property in the digital environment. Developed by the International DOI Foundation on behalf of the publishing industry, its goals are to provide a framework for managing intellectual content, link customers with publishers, facilitate electronic commerce, and enable automated copyright management.

EDItEUR:

http://www.editeur.org

EDItEUR is the international group coordinating development of the standards infrastructure for electronic commerce in the book and serials sectors. EDItEUR has developed a number of key standards that are already internationally used within the books and serials supply chains to facilitate e-commerce, enable the transmission of rich metadata records, and that use existing identifiers.

Europeana:

http://www.europeana.eu

Europeana is a project funded by the European Commission with the goal of making Europe’s cultural and scientific heritage accessible to the public. Europeana enables people to explore the digital resources of Europe’s museums, libraries, archives and audio-visual collections. It promotes discovery and networking opportunities in a multilingual space where users can engage, share in and be inspired by the rich diversity of Europe’s cultural and scientific heritage.

GS1, formerly European Article Number:

http://www.gs1.org

GS1 is dedicated to the design and implementation of global standards and solutions to improve the efficiency and visibility of supply and demand chains globally and across sectors. The GS1 system of standards is the most widely used supply chain standards system in the world.

IAML, International Association of Music Libraries, Archives and Documentation Centres:

http://www.iaml.info

IAML encourages and promotes the activities of music libraries, archives and documentation centres to support and facilitate the realization of projects in music bibliography, music documentation and music library and information science at national and international levels.