American Composers Alliance The American Composer's Alliance is a service organization that provides a number of valuable professional services to over 200 American composers of classical music. Conductors Guild Advancing the Art and Profession of Conducting since 1975, and a member of the National Music Council. 1,800+ members strong in over 30 countries. Music Educators National Conference The mission of MENC: The National Association for Music Education is to advance music education by encouraging the study and making of music by all.