Media in New York City have their editorial offices based in the city. New York is home to the corporate headquarters of such publishing giants as: Among other national leaders based in New York city are "Newsweek", owned by The Newsweek Daily Beast Company", and Rolling Stone", published by Wenner Media. In the 1930s, New York-based RCA was the nation's largest manufacturer of phonographs. In the late 19th and early 20th century, most sheet music in the United States — especially the popular songs of the day, many now standards — was printed at Tin Pan Alley, so called because the constant sound of new
Concentration of media ownership Corus Entertainment and Shaw Communications), Rogers Communications, Quebecor, and the government-owned CBC/Radio-Canada. Each of these companies holds a diverse mix of television, specialty television, and radio operations. Bell, Rogers, Shaw, and Quebecor also engage in the telecommunications industry with their ownership of internet providers, television providers, and mobile carriers, while Rogers is also involved in publishing. In 2007, CTVglobemedia, Rogers Media and Quebecor all expanded significantly through the acquisitions of CHUM Limited, CityTV and Osprey Media, respectively. In 2010, Canwest Global Communications, having filed for bankruptcy, sold its television assets to Shaw (through a new subsidiary, Shaw Media) and spun