On tour: Lollapalooza; Loggins & Messina reunite -- Pixies and Killers lead the 60-act bill on this year's edition of the alt-rock fest, while Loggins & Messina reunite after 30 years, and Stevie Nicks and Don Henley join forces

On the road this summer, everything old is new again. Over the weekend, there were announcements heralding the return of aging alt-rock fest Lollapalooza, to be headlined by the recently reunited Pixies and newcomers The Killers; a co-headlining tour featuring classic-rockers Stevie Nicks and Don Henley, and a road trip for Loggins & Messina, playing together for the first time in 30 years.

Lollapalooza showed its age last summer when the tour was scrapped due to poor ticket sales. This year, the concert has reinvented itself as a stationary weekend rock festival, à la Coachella or Bonnaroo. This year’s edition, set for July 23 and 24 in Chicago’s Grant Park, features some 60 new and old acts, including The Arcade Fire, Billy Idol, The Bravery, Brian Jonestown Massacre, The Dandy Warhols, Dashboard Confessional, Death Cab for Cutie, the newly reunited Dinosaur Jr., Digable Planets, G. Love & Special Sauce, Kaiser Chiefs, Liz Phair, Tegan and Sara, The Walkmen, Weezer, and Widespread Panic. Ticket and lineup information are available at lollapalooza.com.

Nicks and Henley, who had a duet hit with ”Leather and Lace” in 1981, are both busy this summer — the Fleetwood Mac songstress has a four-night stand at Caesar’s Palace in Las Vegas in May, and Henley is joining his bandmates in The Eagles for a tour beginning in August. In between, however, they plan to play at least five shows together, starting June 3 in Philadelphia. Other arena and amphitheater dates, according to Billboard, are June 4 in Holmdel, N.J.; June 8 in Mansfield, Mass.; June 10 in Wantagh, N.Y.; and June 13 in Hershey, Pa.

Billboard also reports that Kenny Loggins and Jim Messina, who haven’t toured together since 1976, will play some 40 dates this summer, starting June 24 in Boise, Idaho. The tour coincides with the May 24 release of The Best: Loggins & Messina Sittin’ in Again. (Dubbing their trek ”Sittin’ in Again,” the duo will make a point of encouraging famous friends to join them onstage if they cross paths.) Loggins told Billboard the duo’s tour was inspired by a benefit concert they performed last year. ”I’d been playing a lot of these songs, like ‘Danny’s Song’ and ‘House at Pooh Corner’ alone for years, and when Jimmy came in, I remembered who we were,” he said. ”Something magic happens when the two of us sing together.”