With a new album due in stores next month, singer/guitarists Amy Ray and Emily Saliers--a.k.a. Indigo Girls [ tickets ]--are making plans to hit the road.

The duo has lined up a string of March shows set in the eastern U.S., including a two-night stand at New York City's Radio City Music Hall on March 12-13.

The road work supports "All That We Let In," which Epic Records will issue on Feb. 17. Peter Collins--who also turned the knobs on "Become You"--the most-recent Indigo Girls album--and 1994's "Swamp Ophelia"--produced the forthcoming set.

Joining Ray and Saliers on the album was the pair's longtime backing band: bassist Clare Kenny, keyboardist Carol Isaacs and drummer Brady Blade.

Singer/pianist Joan Osborne contributes back-up vocals to three tracks.

In a noted change from past albums, Ray--who, until now, has limited her guitar playing to rhythm parts--played some solos during the recording sessions.

"I'm learning to play lead," she said in a statement. "When I hear something in my head, I want to play it the way I hear it."

Saliers, meanwhile--who has played dobro, banjo, bouzouki, classical guitar, piano, hurdy gurdy and guitar on prior albums--makes her mandolin and high-string guitar debuts on the "All That We Let In."