The Music Library Association (MLA) of the United States is the main professional organization for music libraries and librarians (including those whose music materials form only part of their responsibilities and collections). It also serves corporations, institutions, students, composers, scholars and others whose work and interests lie in the music librarianship field. National meetings occur annually. In 2011, MLA officially merged with the International Association of Music Libraries, Archives and Documentation Centres (IAML). MLA is the US branch of IAML. "The full merger of IAML-US and MLA now allows us to represent the full spectrum of music librarianship in the United States and to participate as partners and equals with the other national branches of IAML." Source: Wikipedia (en)