This thesis examines the professional musical stage of Montreal in the decade following the First World War. Throughout the 1920s, almost all of the city's musical theatre attractions were foreign in origin, and were staged by American, French, and British roadshow companies, arriving mainly from New York City. Analysis of Montreal's musical theatre entertainment and satellite relationship with Broadway highlights the growing cultural influence of the United States upon Quebec society in the interwar period. As a northern outpost of Broadway, Montreal was directly affected by the profound transformation of the entertainment industry of the United States. After peaking in the second half of the decade, the musical stage of Montreal was gradually supplanted by the decline of the roadshow system, the advent of the sound film, the onset of the Great Depression, and the resurgence of local stock theatre companies.