A semitone, also called a half step or a half tone, is the smallest musical interval commonly used in Western tonal music, and it is considered the most dissonant when sounded harmonically. It is defined as the interval between two adjacent notes in a 12-tone scale (e.g. from C to C â¯).
The National Labor Union. The first large-scale U.S. union was the National Labor Union, founded in 1866 to organize skilled and unskilled laborers, farmers, and factory workers.
The Canadian Labour Union (1872 â 1878) was the short-lived first attempt at a national central organization to represent labour unions in Canada.It was founded in Toronto, Ontario on September 23, 1873, by 46 local unions.It could not be called a national body as only Ontario based unions participated.he Canadian Labour Union (1872 â 1878) was the short-lived first attempt at a national central organization to represent labour unions in Canada.