TORONTO -- The parade of stars continued on day 4 of the Toronto International Film Festival as Steve Carell, Nicholas Hoult, Deepa Mehta, Julianne Moore, Ellen Page and Kristen Stewart hit the streets for splashy red carpet premieres.

Here's a look at some of the festival highlights from Sunday:

Music-obsessed Quebec director Jean-Marc Vallee says he's looking forward to tackling his first straight-up rock 'n' roll feature -- a potential biopic of Janis Joplin starring Amy Adams.

The project has long been kicking around Hollywood -- both Fernando Meirelles and Lee Daniels were previously attached -- but has failed to get off the ground.

While on the circuit with festival opener "Demolition," the Montrealer said he was waiting for the project to be officially green-lit, but added that Adams has already begun singing lessons.

"We had conversations. We went to the Janis Joplin vault in L.A. but we haven't started the official work yet," Vallee said.

Adams will sing herself in scenes recounting Joplin's days as a folk singer, but will lip sync when it comes to the rock 'n' roll years.

"Nobody can sing like Janis. There's no way, it's impossible," Vallee said. "You need to lip sync. Amy Adams will not try to pretend to sing like Janis Joplin."

   

Idris Elba says he hit the turntables on the Spanish island Ibiza to shake off his warlord character in "Beasts of No Nation."

"I couldn't have done anything more different. Like, literally 48 hours ago I was in a jungle in Ghana and now I'm (DJing) in a night club," the British star told reporters.

"I did that on purpose, actually, because character residue -- which sounds like a psychological term that I've been diagnosed with -- but character residue is a big thing, it's real, for me."

"Beasts of No Nation," directed by "True Detective" Emmy winner Cary Fukunaga, stars Elba as a charismatic yet ruthless commander of mercenary fighters during a civil war in an unnamed West African country.

The story is based on the acclaimed novel by Uzodinma Iweala of Nigeria.

"With this character, it was really easy to shake, if I'm honest," said Elba, who won a Golden Globe for playing a detective on the British TV crime drama "Luther."

"Because as soon as you take yourself out of Ghana, take yourself out of the jungle and throw yourself into a night club in Ibiza, the character kind of fell off of me very quickly.

"When I played Luther, he stayed around a long, long time because he's so cerebral and it takes a lot of real estate."

  

Tom Hardy has found a creative way to get more screen time: playing identical twin brothers in his new film "Legend."

"I wanted to play both of them from the start because I couldn't see one without the other," Hardy said.

But that wasn't the original plan for the crime-drama about Reggie and Ronnie Kray, two overlords of the London crime world in the 1960s.

Director Brian Helgeland said he originally envisioned Hardy playing only one of the brothers, but after meeting with him, came to realize the actor wasn't going to budge.

"Tom basically said 'I'll give you Reggie if you give me Ron,"' Helgeland said.

Hardy, who made headlines earlier this year for smacking down a question that he perceived to be sexist at a "Mad Mad: Fury Road" press conference, showed he's still unafraid of sparring with reporters over queries he deems unworthy of response.

When one reporter linked the openly gay twin brother in "Legend" to a question about Hardy's own sex life, the actor bristled.

"What on earth are you on about?" he asked the reporter.

"Are you asking me about my sexuality? Why?"

The press conference's moderator quickly moved on to the next question.

  

"Selma" director Ava DuVernay got the jitters at a luncheon held in her honour.

DuVernay was the recipient of the Golden Thumb award at the Ebert Luncheon, an exclusive industry event for about 70 invitees.

When she got up to address the audience -- which included David Oyelowo, who played Martin Luther King, Jr., in "Selma," film academy president Cheryl Boone Isaacs and actress Rosie Perez -- she got a little flustered by the sight of fellow director Michael Moore, who was sitting at her table.

"I keep looking at him," she told the audience. "Don't be nervous, sir, I don't want to do anything to you. I just want to see your face."

The lunch was held by the festival and Chaz Ebert, the widow of Chicago movie critic Roger Ebert, who was a keen supporter of DuVernay early in her career.

"I see a very direct correlation in a place where his hand touched me -- even though I didn't know it -- throughout the years, from a little girl who loved movies ... to a young filmmaker who began to be amplified because he saw me," she said.

"And so, I'm so grateful for him."

  

Don't expect British actress Carmen Ejogo to coo a love song to Sudbury, Ont., where she and Ethan Hawke shot the Chet Baker biopic "Born to Be Blue."

"I'm half-Scottish and my mom comes from a tiny little mining town that's seen better days in Scotland -- and it reminded me very much of that," said Ejogo during the Toronto International Film Festival, where her movie is having its debut.

"You're the curiosity of the town when you show up with your circus, but at the same time, it's a little bit of a them and us thing. They're just getting on with their regular life in this very regular town."

The shoot occurred over October and November 2014, and the temperature eventually started to dive.

"It got intensely cold," said Ejogo, who played Coretta Scott King in "Selma," and also had roles in "Away We Go," "Pride and Glory" and "The Purge: Anarchy."

"It felt very much in the middle of nowhere. At least there were a few of us that would find any opportunity to get to Toronto on the weekend."

But the affable Ejogo seemed to feel immediate regret for poking fun at the town.

"That sounds terrible," she lamented. "Now I feel really bad. Because Sudbury has as much going for it as anywhere else.

"I'm sounding like a snobby Brooklyn girl now."

 

Making a movie about notorious Irish-American gangster James "Whitey" Bulger in the very city he lorded over turned out to have a significant impact on the "Black Mass" cast.

The film, starring Johnny Depp as Bulger, was shot in Boston, in many cases at the specific locations where real-life events took place.

"One thing I didn't count on was just how much the stories and ghosts of this story were going to seep in," said Australian actor Joel Edgerton, who developed a Boston accent and convincing swagger to play FBI agent John Connolly.

Connolly, a childhood friend of Bulger's, convinced the mobster to eventually become an FBI informant, but ended up having to cross line after line to keep their relationship intact.

Edgerton said he was astounded by the tales he heard while in Boston.

"It's amazing the stories that were just sort of volunteered by people," he said. "The people who'd come sniffing around. It was almost the research that's coming to you. Rather than you going and having to look for the research."