Lilith Fair, the concert tour known for its lineup of female musicians, has canceled 10 more shows. The tour covered a variety of musical genres, with country artists Emmylou Harris, Miranda Lambert, Loretta Lynn, Martina McBride and Sugarland scheduled to appear on various dates. According to the Lilith Fair website, the latest cancellations are Salt Lake City (July 12), Montreal (July 23), Raleigh, N.C. (Aug. 4), Charlotte, N.C. (Aug. 6), West Palm Beach, Fla. (Aug. 10), Tampa, Fla. (Aug. 11), Birmingham, Ala. (Aug. 12), Austin, Texas (Aug. 14), Houston (Aug. 15) and Dallas (Aug. 16). The Nashville and Phoenix dates were cancelled last month. "We are in the midst of one of the most challenging summer concert seasons with many tours being canceled outright," said Lilith Fair co-founder Terry McBride. "Everyone involved with the tour would like to apologize to the fans and artists scheduled to play in these markets and express appreciation for all the support for the festival's return. Lilith remains the only tour of its kind, and we are confident that fans will be amazed by what each date has to offer." The tour's next stop will be Friday (July 2) in Portland, Ore., with performances by Sugarland, Sheryl Crow, Colbie Caillat, Sarah McLachlan and others.