In the spring of 2016, the Andrew W. Mellon Foundation awarded a two-year grant to a group of six libraries led by Stanford University to support initiatives that develop and advance the use of linked open data. The grant, called LD4P (Linked Data for Production), encompasses a variety of projects being undertaken by the member libraries to experiment with creation of linked data for library resources using BIBFRAME as a possible framework. One component of the LD4P grant is LD4PM—Linked Data for Performed Music. It is in this part of the work that MLA has a clear role to play. By means of a partnership that includes representatives from MLA, Stanford University, the Association for Recorded Sound Collections (ARSC), the Library of Congress, and the Program for Cooperative Cataloging (PCC), the LD4PM project aims to develop an ontology for performed music in all formats, using BIBFRAME as a core model, with extensions added as needed. MLA’s Cataloging and Metadata Committee (CMC) convened an informal working group known as the Linked Data Working Group (LDWG) to carry out work that would inform this ontology, with members representing several different areas of expertise within the organization. The LD4P grant work follows on the heels of the completion of BIBFLOW, a related project by UC Davis and Zepheira funded by a grant from the Institute of Museum and Library Services (IMLS). BIBFLOW examined the impact of BIBFRAME on library technical services workflows, with the goal of beginning to develop a roadmap for how research libraries should adapt library practices, workflows, software systems and partnerships to support the evolution to new standards and technologies. This session will provide an overview of the nature of an ontology, a report on findings from the BIBFLOW project, and an examination of the exciting work done within LD4P, LD4PM, and MLA’s own LDWG.