Country star Toby Keith [ tickets ] launches his summer tour this weekend, an outing that focuses on the U.S. amphitheater circuit.

The itinerary, which also includes stops at a few fairs and festivals, was recently expanded to include stops in the Phoenix and Philadelphia areas, as well as a few additional markets. Details are listed below.

Keith continues to support his 2002 release, "Shock 'N Y'all," which is certified triple-platinum in the U.S. "Whiskey Girl," the latest single from the set, has been a mainstay on country radio and on the cable country network CMT, and recently topped Billboard's country singles chart.

The singer recently returned home after completing a USO tour that touched down in Kosovo, Germany, Italy, Afghanistan and Iraq.

In April, Keith and fellow country singer Kenny Chesney led the pack at the CMT 2004 Flame Worthy Video Music Awards, taking home two awards each. Keith took the event's top honor, Video of the Year, for "American Soldier," and also scored the Collaborative Video of the Year trophy for "Beer for My Horses," his duet with Willie Nelson.

"Beer for My Horses" also pulled down the Video Director of the Year award for Keith's longtime collaborator Michael Salomon.

Keith dominated the 39th annual Academy of Country Music Awards in May, taking home four trophies, including his second straight Entertainer of the Year award. He also won Album of the Year for "Shock 'N Y'all," and ACM/Launch Video of the Year for "Beer for My Horses."