St. Petersburg Institute of International Trade, Economics and Law St. Petersburg Institute of International Trade, Economics and Law St. Petersburg Institute of International Economic Relations, Economics and Law (IIEREL) - IVESEP () is an independent institution of higher education in St. Petersburg, Russia. Established in 1994 by the interregional public organization “ZNANIE Society in St. Petersburg and Leningrad Oblast”. IVESEP-IIEREL is headquartered in St. Petersburg in a 19th-century palace built for Princess Zinaida Ivanovna Yusupova (42 Liteiny Prospekt). More than 80% of the professors of IIEREL are doctors and candidates. IIEREL is involved in the Bologna process. The Institute consists of six faculties: Economics, Humanities, International Relations, Law, Second
20th-century music had earlier been called race music, and country music. See also rock musical and rock opera. 20th-century music During the 20th century there was a huge increase in the variety of music that people had access to. Prior to the invention of mass market gramophone records (developed in 1892) and radio broadcasting (first commercially done ca. 1919–20), people mainly listened to music at live Classical music concerts or musical theatre shows, which were too expensive for many lower-income people; on early phonograph players (a technology invented in 1877 which was not mass-marketed until the mid-1890s); or by individuals performing music