Opening for such acts as the White Stripes, Cat Power, Bright Eyes and My Morning Jacket is nothing new for indie rock singer/songwriter M. Ward. But being handpicked to warm the stage for Grammy-winner Norah Jones is something different.

This spring, M. Ward will step out of clubs and into theaters while opening for Jones on her upcoming North American tour, putting the indie rock stalwart in front of his most mainstream audience to date. The jaunt starts April 13 at Wallingford, Conn.'s Chevrolet Theatre and wraps May 12 at Montreal's St. Denis Theatre.

"It's a whole different demographic," says Eric Dimenstein, M. Ward's agent at Ground Control Touring.

But not completely surprising, explains Dimenstein. "She's a fan of his. They've done some work together in the studio, and he played a little on her new album ("Not Too Late").”

Jones, says Dimenstein, "was mentioning M. Ward in interviews and she reached out. She wants to introduce him to some people, I guess."

New Hampshire-based M. Ward, who released "Post-War" on Merge Records in August, is confirmed to open for Jones in such markets as Boston, New York City, Nashville, Atlanta, Milwaukee, Chicago and Washington, D.C. Unlike past shows, M. Ward will be performing solo without a backup band on the Jones dates, according to Dimenstein.

No further M. Ward gigs are currently scheduled.

Following its summer release, "Post-War" debuted on The Billboard 200, and has moved 44,000 units in the United States, according to Nielsen SoundScan. In September, the singer/songwriter toured through 500- to 1,400-capacity clubs.

"On this album, he came out from supporting in the clubs to selling out Town Hall in New York a month in advance," Dimenstein says.

M. Ward recently completed a string of "rare solo performance" concerts in late January/early February. Those shows included visits to New York's Town Hall, Toronto's Mod Club Theatre, Chicago's Park West, Los Angeles' El Rey Theatre and San Francisco's Bimbo's.

M. Ward also wrote music for the film "The Go-Getter," which debuted at this year's Sundance Film Festival. He performed at the event's "Sundance Celebrates Music & Film" in Park City, Utah, at the Kimball Arts Center on Jan. 21.