SEVEN-STRING GUITAR is a guitar with seven metal strings. In four and five string version guitar was known in Moscow and St.Peterburg from 1769. In 1790 Russian palace harpist Andrew Sihra created the first seven-string version of guitar, which became very popular in Russian music world. Seven-string guitar is also called RUSSIAN guitar. And real glory Russian guitar got with the help of outstanding players, such as Michael Vysotski, Petr Agafoshin and many others. Seven-string guitar had invaluable influence on forming of Russian art song (romance). This music genre was very popular in Russia. Unfortunately, nowadays seven-string guitar has bad times, it is used very seldom so it is very rare instrument.