Oh Canada is the national anthem of Canada. The song was originally commissioned by Lieutenant Governor of Quebec Théodore Robitaille for the 1880 Saint-Jean-Baptiste Day ceremony; Calixa Lavallée wrote the music as a setting of a French Canadian patriotic poem composed by poet and judge Sir Adolphe-Basile Routhier. The lyrics were originally in French and translated into English in 1906. Robert Stanley Weir wrote in 1908 another English version, which is the official and most popular version, one that is not a literal translation of the French. Weir's lyrics have been revised twice, taking their present form in 1980, but the French lyrics remain unaltered. "O Canada" had served as a de facto national anthem since 1939, officially becoming Canada's national anthem in 1980 when the Act of Parliament making it so received Royal Assent and became effective on July 1 as part of that year's Dominion Day celebrations. The National Anthem Act specifies the lyrics and melody of "O Canada", placing both of them in the public domain, allowing the anthem to be freely reproduced or used as a base for derived works, including musical arrangements.
