Billboard.com's Best Pictures of 2011
The Kills, Lollapalooza, August 2011.

Half an hour before she rocked the Bud Light stage at Lollapalooza on Friday (Aug. 5), the Kills' powerhouse singer Alison Mosshart talked about the band's return to the Lollapalooza stage, Marilyn Monroe and writing with Jack White.

The group's fourth album, "Blood Pressures," released April 5 on Domino, is the garage-rock duo's darker and dirtier return from a hiatus and follow-up to 2008's breakthrough "Midnight Boom." Mosshart says that she and guitarist Jamie Hince are happy to road-test the new material, especially at festivals like Lollapalooza.

"My favorite part is when bands I like play the same day, and you get to hang out with people," she says. "Some summers it's really great, you're just kind of traveling the world together and playing all the same places, so it's really fun."

Photos: Lollapalooza 2011 | Photos: Lollapalooza 2011 Portraits
Lollapalooza 2011 Main Page

Last week the London-based group perked up music blogs with their stunning cover of Marilyn Monroe's "One Silver Dollar" during an Australian acoustic session for Triple J studios. Mosshart jumped at the opportunity to cover the screen siren's obscure 1954 recording.

"I've played it to a lot of people, and everyone becomes obsessed with it immediately," she says. "That's a song I've really always liked. I've always kind of played that song to myself and hoped that Jamie and I would do it at some point."

Lollapalooza 2011: 15 Things Seen & Heard Friday

While not alongside Hince onstage, Mosshart is one-fourth of the Nashville supergroup the Dead Weather, which features Jack White. The singer says that the writing process for the Kills and the Dead Weather couldn't be more different.

"Jamie and I... both individually write quite a lot of material and bring it to each other," says Mosshart. "A band like the Dead Weather writes completely spontaneously -- four people in a room, press record, play together." As for new material from the Dead Weather, Mosshart insisted the subject hasn't even been breached. "We haven't talked about it, thought about it, nothing." She continued, "Right now I'm focusing on this record and Jack is doing his thing. It's as simple as that."

After performing in New York this Monday, the Kills will head overseas for a European tour. Check out more footage of their Friday performance below.