Got questions about porn? Amanda Seyfried is taking them. And there's no inquiry she's not afraid of.

Since filming the lead role as 1970s porn star Linda Lovelace in "

"It's like underage drinking," she offered up knowingly, "you're looking for it everywhere. It's like a secret. And of course that was a big deal when 'Deepthroat' was in theaters and you could actually buy a ticket and watch it with everybody."

From printed page to silver screen: It's been one wild ride for author Cassandra Clare and her series.

" 'Surreal' is the word," the author told MTV News' Josh Horowitz while on the Toronto-based set of the urban fantasy. "My husband says it's like being at Disneyland where all of the rides are based on my book. It has gone through a long process."

A long process, yes, but not an unexpected one for Clare, who has movie-making in her blood.

"My grandfather was a movie producer. I grew up in the film industry," she explained. "I always knew movies aren't really happening until they're actually filming, and I thought this will never really happen. And then when they got [director] Harald [Zwart] on board, I really started to believe it could because he has such a passionate commitment to the project, and he's a very emotion-focused director. And he really wanted to focus on the characters and their relationships to each other with the special effects second. And I thought that was a really great quality in a fantasy-film director."

Clare did admit that it took some time for it to all really sink in, recalling her aha moment:

"We were shooting in the subway, and they had closed off part of the subway for shooting, and I walked down the stairs to get to the set, and I saw Kevin Zegers in his full costume with runes and everything. And all the commuters were passing him by like they didn't see him. And I just thought, 'Oh my god. It's like ...

CHICAGO — There was no point in Imagine Dragons trying to out-do the WTF puppet-cage match narrative in the video for their breakthrough hit, "Radioactive."

Instead, the 2013 VMA nominees for Best Rock Video decided to go the other way in the clip for their new single, "Demons," focusing on the drama in our every day lives and their high-energy stage show. Just before the Las Vegas-bred band took the stage for one of those sweat-soaked gigs at Lollapalooza, singer Dan Reynolds told MTV News he thought the dramatic video for "Demons" is actually the perfect follow-up to the fantasy-like "Radioactive" clip.

"We intertwined a story through it that tells the story of demons," he said. "There's more to people than what you see at face value and often we judge people very quickly."

The video for the fourth single from the band's smash major-label debut, Night Visions, was shot during a show at Las Vegas' The Joint earlier this year and mixes live footage with a story about love and loss. It opens with impressionistic, slow-motion shots of the band bathed in blue light before focusing in on a woman in the audience who, who soon learn, has lost a military spouse.

The camera pans across the crowd and catches a different fan, this one an emaciated man staring in the mirror, then another with a black eye from a parental assault and finally, a solider flashing back to a rescue of a comrade in arms during wartime.

"When you get to know them, there's more behind the scenes," Reynolds explained of ...

BROOKLYN, New York — "This gift gives you power," Beyoncé says in voiceover during one of the video shorts that peppers her Mrs. Carter World Tour set. On Saturday night, the first of a three-night set at the Barclays Center, concertgoers beheld the power that is Queen Bey.

Without almost nothing in the way of new material since the 2011 release of her sublime R&B record, 4, Shawn Carter's better half proved her deep catalog was more than enough to mount a thrilling two-hour show, complete with bursts of pyro and awe-inducing walls of glitter. She even reached back into her girl-group grab bag for a fist-pumping rendition of "Survivor."

The Almighty Bey may not actually be capable of but between donning a cape for "If I Were a Boy," and flying over the throngs for "Irreplaceable," it's hard not to believe Beyoncé is a pop superhero, with real super powers. Here are a few other things we learned.

"This Is Not The Show For You To Sit In Your Seats."
That was Beyoncé's decree near the start of the concert. "This is not the show for you to be cool," she lovingly scolded. And she was right. From the dancehall-infused wine of "Naughty Boy" to the Vegas-inspired take on "Party," it was standing room only in Brooklyn. The trio of cute boys in white tanks and short shorts got to practice all of their choreography.

Beyoncé Can Make A Sitcom Theme Song Sound Like A Smash Song.
Midway through her matrimonial kiss-off, "Single Ladies (Put a Ring On It)," Bey ...

CHICAGO — Every festival needs a sure-fire headliner that will bring in the huge crowds, if only for just one night. This year's slam-dunk was Saturday night capper Mumford & Sons, and the British folk revivalists were more than up to the task, drawing a massive, foot-stomping throng to the South end of Grant Park for a string-plucking run through their catalog.

They helped shut the lid on a spectacular cool and sunny day by Lake Michigan that featured everyone from Ellie Goulding to Mr. "Harlem Shake" himself, Baauer, as well as the National, the Lumineers and the Postal Service.

From the look of the swarm of humanity that stretched several hundred yards form the stage, though, Mumford were the act to beat. With smoke billowing across the stage, they wasted no time, busting out breakthrough hit "Little Lion Man" right away to grab their fans and get them moving.

On the same stage that has previously hosted plugged-in thrash by everyone from Pearl Jam to the Red Hot Chili Peppers and Rage Against the Machine, the Mumfords did what might have seemed improbable, if not impossible: they kept the audience's attention with their patented low-key, busk-y mix of banjo, mandolin, acoustic guitar, stand-up bass and drums. If anything, their biggest challenge was to simply rise above the constant, not-so-dull roar of incessant chatter from their admirers.

Seeming fully recovered from recent brain surgery that forced the cancellation of earlier festival dates, bassist Ted Dwane sounded a steady thrum on "Holland Road," looking healthy and energetic during the entire set. A short ...

CHICAGO — Imitation might be the sincerest form of flattery. But when it comes to Robin Thicke's recent brown liquor-soaked cover of Icona Pop's breakthrough breakup single, 
 the Swedish duo love that Mr. "Blurred Lines" took some artistic license.

"We love it," singer Aino Jawo told MTV News just hours before the pair hit the stage for their Lollapalooza debut. Thicke recently did a slowed-down take
 on the song during a British radio appearance, changing up some of the lyrics, which he said he could totally relate to.

"It's so nice to hear different versions of your songs and his version was so sexy and it was like you wanted to go into a bedroom and make love," Jawo said. "Which is like a totally new [feeling] ... otherwise it's like you want to punch someone. We love it!"

Jawo and fellow singer/keyboard player Caroline Hjelt, brought down the house with the song during their mid-day Lolla set on Friday. With Jawo in a black mini dress made of reflective black tiles and Hjelt in a matching white dress, the smiling duo worked the crowd with their high-energy set of dance pop songs from their upcoming full-length debut.

Then, with ominous clouds rolling in over the Chicago lakefront and rain falling for most of their set, the skies miraculously cleared up as they prepared to end with their most recognizable tune. The remixed version of "I Love It," which had some stops and starts that stretched it out, clearly amped up the crowd, who danced up and down and ...

CHICAGO — Lollapalooza is always a study in contrasts. In any given hour you can go from hardcore EDM to folk to country, hip-hop and indie rock, all within a mile on the scenic Chicago riverfront.

But the final two hours of Friday night's kickoff of the 2013 festival was as stark an example of musical night and day as you're likely to get. While polarizing crooner Lana Del Rey was soothing the audience's tired minds and feet with her throwback lounge pop at a small stage set among trees, rebooted Lolla veterans Nine Inch Nails were sowing their legendary path of destruction just a few hundred yards away on the main stage.

On a day when attendees slogged through the muddy fields to hear the dark techno throb of Crystal Castles, the plaintive folk of Father John Misty, Icona Pop's grin-inducing "I Love It" and Imagine Dragons' thundering rock anthems, the strange thing was that both Del Rey and NIN appeared to have a similar effect on fans. They each found a way to lull (or shove) their admirers into a sing-along trance to lyrics about love, hate, dreams and destruction.

NIN's Trent Reznor got things started by casually strolling onto the stage in shorts and a cut-off black t-shirt and plunking out the simple beat of the new song "Copy of A." The beats and keyboard clatter amped up for "Sanctified," with tall, spooky images of the players projected as shadows on the moving screens behind them.

Another new song from the upcoming Hesitation Marks album, first single "Came Back ...

On Friday night, HOV took over HBO.

Jay Z turned the channel into his own personal playground, not only premiering his "Picasso Baby" performance art film, but making a guest appearance on "Real Time With Bill Maher."

Jay appeared on a panel that included former Massachusetts senator Barney Frank and Alexis Goldstein of Occupy Wall Street, and was introduced by Maher with a nod to the "Diamonds From Sierra Leone" remix: "He's not a businessman, he's a business, man, and he also dabbles in a little bit of rap."

A bit later, Maher laughed "I feel like Ed Sullivan when he brought the kids the Beatles," before asking Jay "Do you remember Ed Sullivan?"

"No," Jay joked.

Jay didn't shy away from discussing politics, either. At one point, he engaged in a debate with Frank about budgetary cuts that have eliminated police presence in low-income neighborhoods. Frank maintained that all communities wanted more police on the streets, though HOV disagreed.

"More jobs would be better than police," he said. "I don't want to scare America, but the real problem is there's no middle class; the gap between the have's and the have not's is getting wider and wider. It's going to be a problem that no amount of police can solve."

Maher also asked Jay about his spat with singer and civil rights activist Harry Belafonte, who accused him — and his wife, Beyonce — of not doing enough to help their community. And Jay didn't duck the question.

"If it was a real problem, I'm not very difficult to find, especially for a man of ...