Labor history of the United States. The labor history of the United States describes the history of organized labor, as well as more general history of working people, in the United States. Unions have been important components of the Democratic Party, but that began in the 1930s.
In a more modern usage, a symphony or symphony orchestra is an orchestra, particularly one that plays or is equipped to play symphonies. Going to hear a symphony orchestra play is sometimes called going to the symphony, whether or not an actual symphony is on the program.
A sonata is a three movement piece of music, typically for one instrument with piano accompaniment, or just piano. Although they can be fore multiple instruments. Sonata form is a structure for a musical movement used not only in sonatas, but also in symphonies and concertos. The second movement of a sonata is usually a minuet or scherzo, and the third is commonly a rondo.