St. Petersburg Museum of History St. Petersburg Museum of History St. Petersburg Museum of History is located in St. Petersburg, Florida and exhibits cover the area's history. The museum was founded in 1920 as the St. Petersburg Memorial Historical Society. The city of St. Petersburg, Florida granted the organization use of an old aquarium building in 1922 where it is still located at 335 Second Avenue North East. The museum is the oldest museum in Pinellas County. The Mission of the St. Petersburg Museum of History is to collect, preserve and communicate the history and heritage of Florida with emphasis on St. Petersburg and the
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