Moen said her involvement, which came late in the game, came out of Meloy's desire to have a strong female co-vocalist on the record.
"No one's getting dressed up in suits," he said, like they did in 2009's "A Short Fazed Hovel" tour, when they performed as the characters referenced on the album.
Because "Hazards" was a concept album, they played it all the way through on that tour.
"To me that was more of an undertaking," Moen said. "Every song segued into one another."
There were also more people on stage: two guest singers doing lead vocals. On this one, Moen said, fans should set aside a couple of hours where they'll hear nine to 11 songs, including most of the new record, some from "Hazards," and a few songs that have been left off from recent tours.
"It's more of a what-you-see-is-what-you-get tour," Moen said. "We wear the shirts we wear all day and try to be entertaining."
If you go
The Decemberists perform Monday at 6 p.m. Merriweather Post Pavilion, 10475 Little Patuxent Parkway in Columbia. Tickets start at $30. Call 410-715-5550 or go to merriweathermusic.com.