Medium of Performance for Music Working List of Terminology Revised February 2013 Terms listed here are from Library of Congress Subject Headings (LCSH). The status LCMPT indicates that the Library of Congress (LC) and the Music Library Association (MLA) have agreed that the term is eligible, if not necessarily as a main term or in the form shown in this list, for LCMPT, Library of Congress Medium of Performance Thesaurus for Music, which being developed by these two collaborators. The status LCSH means the term will not be added to LCMPT. For a complete list of medium of performance terms LC and MLA have agreed on for LCMPT, see http://www.loc.gov/catdir/cpso/medprf_lcmla.pdf.