| Term | Definition |
|---|---|
| Mikado, The | The Mikado (UK, 1885) Comic opera in three acts by WS Gilbert; music by Arthur Sullivan |
| Maritana | Maritana (UK, 1845) Opera in three acts by Edward Fitzball; music by Vincent Wallace |
| Madame Sans Gene | Madame Sans Gene (UK, 1897) Comedy in a prologue and three acts by J Comyns Carr, adapted from the French of Victorien Sardou & E Moreau |