While many music journals now offer online content, many older journals are only available in print. Check the Western Libraries Shared Library Catalogue by Journal Title to ascertain the location of back-runs of older journals.
ML1 = Music periodicals, published in the US
ML5 = Music periodicals published in Canada, or the UK
ML27 = Music periodicals published by a Society or an Association (e.g. JAMS, the NATS Journal of Singing)