Name
- Artia, Czech publishing house, fl 1958-19671
- Au Ménestrel, of Geneva; music dealers, fl 1947-19611
- London Bach Group, 1957-19611
- Mairants, Ivor, classical and jazz guitarist, 1908-19981
- Mar, Norman, conductor, 1919-19941
- Martinů, Bohuslav Jan, Czech composer, 1890-19591
- Mason, G. S., correspondent of Boosey and Hawkes Ltd., fl 19611
- McAllister, Gilbert, journalist and Member of Parliament, 1906-1964, http://isni.org/isni/000000...1
- McCredie, Andrew Dalgarno, Australian musicologist, 1930-20061
- Minchinton, John, conductor, fl 1940-19611
- Musicians' Union, United Kingdom, 1921-1