For their fifteenth anniversary, the Indigo Girls are pulling out all the stops, inviting an all-star cast to join up on certain dates on their upcoming Honor the Earth tour, which kicks off Sept. 30 in Billings, Mont. Among the guests to appear include Joan Baez, Jackson Browne, David Crosby , Indigenous, Edwin McCain, Bonnie Raitt and Vonda Shepard.

As for which shows will feature which artists, Baez and Raitt will join the initial dates of the tour, with Raitt departing after the Oct. 6 date in Salt Lake City and Baez bowing out after the Oct. 3 date in Bozeman, Mont. (this is also the one Honor the Earth stop without the Indigo Girls, where Emily Saliers will perform solo). Browne will join up with the Girls Oct. 9 in Windowrock, Ariz., Oct. 11 in Albuquerque, and then again Oct. 17 in Chicago through the tour's closing stop Oct. 19 at the Menominee Reservation. McCain and Shepard will pop in for the Denver show Oct. 12, while Crosby will make appearances at the Oct. 16 and 17 shows in Minneapolis and Chicago, respectively.

Honor the Earth, the Indigo Girl's fourth such outing, funds Native American environmental and cultural preservation projects, focusing on the dumping of nuclear waste on native lands and protecting the free-range buffalo herd in Yellowstone National Park.

Meanwhile, the Indigo Girls will release a career overview, Indigo Girls: A Retrospective Oct. 3, with the two new tracks, "Leaving" and "Devotion." Following the Honor the Earth tour, the Indigo Girls will head out a six-date college and festival tour, which starts Oct. 20 in Richmond and wraps up Oct. 28 in Atlanta.

Honor the Earth tour dates:

9/30: Billings, MT, The Shrine
10/1: Blackfeet, MT, Reservation
10/2: Great Falls, MT, Civic Theater
10/3: Bozeman, MT, Brick Breeden
10/4: Missoula, MT, Adams Event Center
10/6: Salt Lake City, UT, University of Utah Huntsman Center
10/8: Verde Valley, AZ, Sedona Festival
10/9: Windowrock, AZ, Windowrock Civic Center
10/11: Albuquerque, NM, Kiva
10/12: Denver, CO, The Fillmore
10/13: Lawrence, KS, Haskell College Political Rally
10/14: Lawrence, KS, Lied Center
10/16: Minneapolis, MN, Orpheum
10/17: Chicago, IL Chicago Theater
10/18: Stevens Point, WI, University of Wisconsin at Quandt
10/19: Menominee, WI, Reservation

Indigo Girls' college and festival tour dates:

10/20: Richmond, IN, Earlham College at Athletics & Wellness Center
10/21: Columbus, OH, Newport Music Hall
10/22: Morgantown, WV, West Virginia University at Creative Arts Center
10/26: Boone, NC, Appalachian State University at Farthing Auditorium
10/27: Winston-Salem, NC, Wake Forest University at Wait Chapel
10/28: Atlanta, GA, Earth Challenge Benefit at Centennial Park

JENNIFER VINEYARD
(September 19, 2000)