The Sonic Control Music Tech 21 are the 21 U.S. publicly traded stocks that impact the music industry from education to music production. Stock quotes run twenty minutes behind the actual stock tickers. For each company there’s the current quote, stock charting, and an average of three news stories per company. For more detailed information on an individual stock, just click the chart. You’ll immediately go to Finance.Yahoo.com where you’ll find a complete quote and analysis for each company.