Stretta ( ital. Stretta from ital. Stringere - “squeeze, cut”) is the canonical conduct of topics in the fugue , in which each voice imitating the theme enters before it ends in the previous voice, and individual parts of the theme sound simultaneously in different voices, that is, they are counterpointed with each other. Often, after the topic ends, in the beginning voice, she enters the third voice, and the three-part straight is formed as a chain of two-voice canons (F-dur fugue from the 1st volume of I.-S. Bach's Well-Tempered Clavier, measures 37–44). The stretta, which is the canon in all voices (the last one enters before the topic ends in the beginner), is called the main or maestral ( stretto maestrale - fugues C-dur, b-moll from the 1st volume of J. S. Bach's Well-Tempered Clavier) ) Stretts in the form of a double canon are distinguished by their particular polyphonic completeness: on two topics ( fugue e-moll op. 87 No. 4 of Shostakovich), on a topic with a held backlash ( fugue from the quintet op. 57 Shostakovich). Strett can be complicated by the use of magnification, circulation and other methods of polyphonic transformation. In complexly constructed fugues, a system of varying strattes is formed (fugues dis-moll, b-moll from the first volume of I.-S. Bach's Well-Tempered Clavier).