The Mac is back.

After three years working on their own projects, Fleetwood Mac -- Stevie Nicks, Lindsey Buckingham, Mick Fleetwood and John McVie -- will reunite for a 34-city American tour, starting April 4 in Columbus, Ohio, and including a stop at Madison Square Garden on April 8. Tickets go on sale Dec. 14 through Live Nation.

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The tour coincides with the 35th anniversary of the band's album "Rumours" and the 40th anniversary of the album from pre-Mac duo Buckingham Nicks. However, Nicks said Monday that it isn't yet clear what role those anniversaries will play in the tour.

"We just want to put together the best set possible," Nicks said from her Santa Monica, Calif., home. "We want to create the best two-and-a-half-hour experience for the people."

Nicks said the band has already recorded two new songs -- "Sad Angel" and "Miss Fantasy" -- that they plan to play on the tour. "They're a lot of fun," said Nicks, adding that she wasn't sure if the songs would be released as singles before the tour or if they would be held until a full album is finished. "I think they sound like really great Fleetwood Mac songs."

The band will begin rehearsals in mid-February, though the four have already started discussions about the staging and the setlist. "If we had to do a show the day after tomorrow, we could," Nicks said. "The boys are that good. . . . The great thing with Fleetwood Mac is that we are a finely tuned machine."