AP Photo
Scottish singer-songwriter K.T. Tunstall performs at the Virgin Mobile Festival Saturday, Aug. 9, 2008, at Pimlico Race Course in Baltimore.
AP
Welsh singer Duffy twirls her microphone while performing at the Virgin Mobile Festival Saturday, Aug. 9, 2008, at Pimlico Race Course in Baltimore.
Rhode Island
AP
R&B legend Aretha Franklin performs at the Newport Jazz Festival at Fort Adams State Park in Newport, R.I., on Saturday, Aug. 9, 2008.
AP PHOTO
Grammy winner Herbie Hancock performs at the Newport Jazz Festival at Fort Adams State Park in Newport, R.I., on Sunday, Aug. 10, 2008.
AP
Sonny Rollins performs at the Newport Jazz Festival at Fort Adams State Park in Newport, R.I., on Sunday, Aug. 10, 2008.
Illinois
AP Photo
Rockers Perry Farrell, right, and Slash perform at the Kidzapalooza stage during Lollapalooza in Chicago's Grant Park on Sunday, Aug. 3, 2008.
AP PHOTO
Duffy performs at Lollapalooza in Chicago's Grant Park on Friday, Aug. 1, 2008.
AP
Cee-Lo Green of Gnarls Barkley performs at Lollapalooza in Chicago's Grant Park on Sunday, Aug. 3, 2008.
Minnesota
AP/The Fergus Falls Daily Journal
Country music performer Taylor Swift performs at WE Fest on Thursday, Aug. 7 in Detroit Lakes, Minn. Swift is touring with Rascal Flatts, which performed later that night. The four-day music festival ended Aug. 10.
Pennsylvania
AP/The Express-Times, Joe Gill
The band Earth Wind and Fire performs in concert in Bethlehem, Pa., Wednesday, Aug. 6, 2008.
California
AP Photo
Buddy Guy performs as part of Nissan Live Sets on Yahoo! Music in Los Angeles, Tuesday, Aug. 5, 2008.
Rhode Island
AP Photo
Formerly of the Beach Boys, Brian Wilson performs with his band on the opening night of the Newport Folk Festival at the International Tennis Hall of Fame on Friday, Aug. 1, 2008, in Newport, R.I.
AP PHOTO
Levon Helm performs at the Newport Folk Festival at Fort Adams State Park in Newport, R.I. on Sunday, Aug. 3, 2008.
AP PHOTO
Richie Havens performs at the Newport Folk Festival at Fort Adams State Park in Newport, R.I., on Saturday, Aug. 2, 2008.
AP Photo
Gillian Welch performs at the Newport Folk Festival at Fort Adams State Park in Newport, R.I., on Sunday, Aug. 3, 2008.
AP Photo
Stephen Marley performs at the Newport Folk Festival at Fort Adams State Park in Newport, R.I., on Saturday, Aug. 2, 2008.
AP Photo
Jimmy Buffett performs at the Newport Folk Festival at Fort Adams State Park in Newport, R.I., on Sunday, Aug. 3, 2008.
AP
Jakob Dylan performs at the Newport Folk Festival at Fort Adams State Park in Newport, R.I., on Saturday, Aug. 2, 2008. He is the son of music legend Bob Dylan.
AP
Chris Robinson, left, and Rich Robinson perform with the Black Crowes at the Newport Folk Festival at Fort Adams State Park in Newport, R.I., on Saturday, Aug. 2, 2008.
AP
Trey Anastasio, formerly of Phish, performs a solo acoustic set at the Newport Folk Festival at Fort Adams State Park in Newport, R.I., on Saturday, Aug. 2, 2008.