Come On Now Social, the sixth album by folk-rock duo the Indigo

Girls, will include appearances by Joan Osborne, Sheryl Crow and members

of Luscious Jackson and the Band.

The 12-song album is scheduled to hit store shelves Sept. 28, with a

single, "Peace Tonight," to be released to radio a few weeks earlier,

according to an Epic Records spokesperson who asked not to be named.

The Indigo Girls — singer/guitarists Amy Ray, 35 and Emily Saliers,

36 — will eventually film a video for "Peace Tonight," according to

the spokesperson, who said the track is mid-tempo and includes "a cool

horn section."

The album, recorded in England, Atlanta and Woodstock, N.Y., includes

production work and drumming by Sinead O'Connor collaborator John

Reynolds.

Singer/songwriter Crow, known for such hits as "My Favorite Mistake"

(RealAudio excerpt), sings back-up on two tracks, "Cold Beer and Remote

Control" and "Gone Again," the spokesperson said.

"Gone Again" also features bassist Rick Danko and organist Garth Hudson

of veteran roots-rockers the Band, according to a statement posted on

the Indigo Girls' official website (www.indigogirls.com). The statement

describes the track, which Ray sings, as "a timeless four-chord folk

song." Danko and Hudson also play on "Ozilline," according to the

website.

Osborne, best known for her 1995 single "One of Us," appears on two

tracks, "Trouble" and "Go," according to the Epic spokesperson.

Another track, "Compromise," features bassist/singer Me'shell

NdegeOcello and Luscious Jackson drummer Kate Schellenbach.

Come On Now Social also includes "Faye Tucker," about Karla Faye

Tucker, a woman who was executed in Texas last year. World-music singer

Natacha Atlas appears on that track.

Other tracks on the album are "Soon to Be Nothing," "We Are Together,"

"Andy" and "Sister."

As on past Indigo Girls albums, Ray and Saliers wrote their songs

separately. "Emily and I don't ever actually write together," Ray wrote

on their website.

The Indigo Girls are on the Lilith Fair, as is Crow, through the end of

August, and are scheduled to play the Bumbershoot festival in Seattle on

Sept. 3.

The Georgia duo, formed in 1985, cultivated a reputation for literate,

politically aware folk rock with songs such as "Closer to Fine" and "Kid

Fears," both from their debut album.

In 1998, the Indigo Girls' spring tour of high schools sparked

controversy after several principals canceled shows, citing Ray and

Saliers' homosexuality and an obscenity in the their song "Shame on You"

(RealAudio excerpt).