Miranda Lambert phoned the morning after, and she was wired and tired.

The night before, the critically acclaimed country star had performed her much-anticipated new album, “Revolution,” in its entirety at the revered Ryman Auditorium in Nashville. She was extremely nervous. But she managed to pull it off in front of fan-club members, industry tastemakers and Taylor Swift.

“I’m still floating around a little bit,” Lambert said last Friday at 10 a. m., hardly working hours for a night-gigging country star. “Every song got a huge reaction. It was unbelievable. I’m going to have to take a nap, for sure.”

This week, with “Revolution” released on Tuesday, Lambert is really working it: She appeared on “Good Morning America,” “Late Show With David Letterman” and “Late Night With Jimmy Fallon.”

“We have to go from New York to L. A., and I wanted to do some shows in between,” she said. “I’m thankful for all the media I get to do, but [performing] on the road is where my heart is.”

There are great expectations for Lambert’s third album. The firebrand’s “Crazy Ex-Girlfriend” was the critics’ runaway country album of the year in 2007; it produced her first Top 10 single, the incendiary “Gunpowder and Lead,” and sold 794,000 copies.

If you think “Revolution” is another collection of he-done-me- wrong-and-I’m-gonnashoot- him songs, then all you need to know is what the pistol-packing, boot-strutting 25-year-old wore when recording these new songs: puppy-dog slippers.

“Those seem to be my lucky shoes this year,” the dog-obsessed singer [she has five pooches, two on tour] said of the comfy footwear she bought at Target. “I thought I made a great record; I don’t know if the dog slippers had anything to do with it. I have ridiculous superstitions that way. They’re going to go into the vault, that’s for sure.”

Lambert has mellowed. Or matured might be a better description. She’s actually singing tender tunes, including “Virginia Bluebell” and “Love Song,” co-written with her beau, singer Blake Shelton.

“I’ve settled in a little bit — know who I am,” she said.