This is Americana: Volume 2, a collection of 20 songs by outsider artists such as Robert Earl Keen and Kathleen Edwards, will be released August 16. The first volume has scanned more than 50,000 units. Both volumes have a price of $1.98. Other artists on the second volume include Rodney Crowell, Michelle Shocked, John Doe, Mary Gauthier, Maria McKee, Caitlin Cary & Thad Cockrell, Holly Williams, the Greencards and 10 others.