There might be no better way of reliving a period than through the music of that era, which for most, can define a generation. The Happy Together Tour at Wolf Trap on Sunday celebrates in '60s style by bringing back some of the most popular artists and bands of the time.

The celebrity lineup includes the Turtles featuring Flo & Eddie along with the Monkees lead singer, Micky Dolenz, the Buckinghams, the Grass Roots, and Gary Puckett & the Union Gap.

Audiences will no doubt sing along to songs such as "Kind of a Drag," "Don't You Care," "Last Train to Clarksville," "Pleasant Valley Sunday," "Midnight Confessions," "Temptation Eyes," "Young Girl" and "Woman, Woman" and naturally, "Happy Together."

"There's no updating here," noted Mark Volman, one of the original Turtles.

Happy Together Tour
Where: Wolf Trap's Filene Center, 1645 Trap Road, Vienna
When: 8 p.m. Sunday
Info: $42 in-house, $25 lawn; 877-965-3872;

"The songs are performed exactly as they were written at the time, [and] the band that plays with us on the tour backs up all of us."

He and the rest of the performers joke about the time three years ago when they first did the tour and were contemplating canceling due to a lack of interest. Fortunately for all concerned, they stuck with it, and this year, they are traveling all over the country with 46 scheduled concerts.

"Kids are going with their parents or grandparents and hearing such classics as ... 'I'm A Believer' by the Monkees (among other gems) and recognizing these songs from popular movies [like] 'Freaky Friday' and 'Shrek' and [also in] commercials," said Jeff Albright, the tour's publicist.

But for the baby boomers, there is a particular feeling that compels them to be part of these reunion tours.

"There is an innocence that connect[s] you and me and our friends," Volman said. "It connected us to all the memories that were built around our relationships and our country."

The success of the Happy Together Tour is proof positive that classic pop music stands the test of time, Albright has pointed out, adding, "I think most would agree that some of the greatest music ever written and recorded came out of the '60s. Some of those songshave simply becomethe fabric of America."