When the second annual Vegoose [ tickets ] festival hits Las Vegas' Sam Boyd Stadium Oct. 28-29, fans can expect members of some of the bands--such as Rilo Kiley's Jenny Lewis [ tickets ]--to dress up for Halloween. But Jack White of The Raconteurs [ tickets ] said he is a little unclear on the subject.

"I think the way my life is, I don't even know what a costume is anymore. But I don't think I'll dress up. I think Gnarls Barkley has got that nailed down," he said with a deep laugh.

A Detroit native, White, who is working on new White Stripes and Raconteurs albums, admitted during a telephone press conference with several other Vegoose acts that Halloween is a little frightening for him.

"The last time I remember doing something for Halloween, I was dressed as Frankenstein, and I was asked into somebody's house, and it got really, really odd," White said. "... He wouldn't let me leave. And I think that sort of was the last time I went out trick-or-treating."

The Raconteurs, Lewis with the Watson Twins, Damien "Jr. Gong" Marley and Chan Marshall ( Cat Power [ tickets ]) with the Memphis Rhythm Band are some of the acts scheduled to play the two-day event. The Killers, The Black Crowes, Tom Petty and the Heartbreakers, and Widespread Panic are also on the bill; the full line-up and ticket information is available at the Vegoose website.

White said he thinks The Raconteurs are perfect for a festival like Vegoose, where fans expect improvisation and surprises.

"This band has a lot of improvisation going on already, fortunately," White explained. "There's so much changing of the songs since we started touring. We didn't get the luxury of touring before the album came out because of the nature of it. So, we want to change it as much as possible.

"The songs have changed so much that I think that we were wondering if people were going to like that kind of improvisation that was happening. I mean, I wouldn't call it hippie jam-band, really. It's not that far, but there's definitely a lot of changing going on in the album tracks. People at festivals ... are getting into it a lot.

"The only thing I can say is every Raconteurs show so far has been different from the last, and we hope to keep it that way. That's what's keeping us motivated to keep pushing harder and harder at what we've started doing. Some of these songs have become so explosive and so much longer that they're very much different songs than what they started out as when we recorded the album."

White said that the festival is a way to expose his band to a large number of fans, but the trade-off is intimacy.

"The difference between playing festivals and clubs--and I'm not dogging festivals in any way--but there's a difference between being at home with a remote control in your hand and being in a seat in a theater watching a movie. When you go to watch a movie, they turn the lights off and they close the doors and you're reverential to the screen. That's a club. That's playing in a club."

The good thing about festivals, he said, is that "you can always maybe come to see one specific thing, but end up accidentally seeing three other bands you like."

Later in the Vegoose teleconference, Marley--who said that his brothers Stephen and Julien may appear with him at the festival--echoed White's observation.

"First of all, you're reaching out to people that you wouldn't usually reach. So ... you're broadening your horizons in that sense. And then a festival always have a certain kind of energy. People don't come out to festivals [to stand]. They come to get involved, so, you always kind of feel that festive vibe come across on a show."

Rilo Kiley's Lewis wrote a song specifically about festivals.

"I actually wrote a song for festivals that we were doing in Europe a couple months ago, this new song called 'Fernando,' which has dance moves," she said, adding, "We've actually started doing that song within our regular touring live show."

Unlike The Raconteurs, Lewis is planning on dressing up for the Vegoose performance.

"We have been working with our merch girl, who has designed dresses for us, based on a dress that Tina Turner wore. We've got some long gowns and some sparkly dresses as well, which is kind of like a girl's dream come true--to be able to play a show and get dressed up."

For her set, Las Vegas-born Lewis will be performing new tracks that will appear on an album she's currently working on, but fans won't be hearing any Rilo Kiley songs.

Marshall is touring with the Memphis Rhythm Band, a project she says makes her sound more accessible to larger audiences such as Vegoose. Marshall, who reportedly has a tough relationship with the stage, said she tries to focus on her music to get herself through a festival performance.

"I just try to remember that my team--my friends who would become friends and family with my band--I try to remember that we're in it together," she said. "I start with the front row and try to work my way back, try to sing to as many people as I can."