Check out:
www.planetbluegrass.com
Telluride, Colorado
June
Averages 7-8 Grammy award winners each year. Claims to host more Grammy award winners per year in U.S. than any other festival.
Sam Bush, Emy Lou Harris, Carlina chocolate drops, much more.
Look at their website. Lists all venues. 800 numbers to call for accomadations, best flights, etc.