Listen To Johansson Sing For Bono AIDS Campaign

Scarlett Johansson has shown off her musical credentials after teaming up with Barry Manilow to promote Bono's latest campaign to fight AIDS.

The 31-year-old actress stars in a video with Jimmy Kimmel where she sings a song written by the crooner about the U2 frontman's Shopathon.

Bono is also launching an all-star campaign featuring "once-in-life-time experiences" that can be won after donating at least $10 to his organisation called (RED).

The campaign kicks off on Tuesday to coincide with World AIDS Day.

Bono will also go on a bike ride with one donor - a year after he was seriously injured in a bike accident in New York's Central Park that forced him into surgery.

"I'm not sure that was as funny to my band as it was to me," Bono said in an interview with The Associated Press. "But I think we're going to have fun and yeah, we'll go visit the scene of the crime."

Jimmy Kimmel is dedicating his Tuesday late-night show to the campaign.

He and Olivia Wilde will host Shopathon, a tongue-in-cheek play off of home shopping, and it will feature celebrity guests like Tom Brady, who is offering one donor a chance to learn how to pass a football, and Shaquille O'Neal, who will take a photo with a winner for his or her 2016 holiday card.

Other "experiences" that can be earned after donating on Omaze.com/RED include a contour makeover with Kim Kardashian, some quality time with George Clooney, attending a red carpet event with Meryl Streep, a Game Of Thrones set visit and a portrait painting by James Franco.

Entries close on 21 January, 2016.

The Bill and Melinda Gates Foundation will match every dollar raised up to $20m.

R&B singer The Weeknd is offering fans a chance to hang backstage at a concert; there is a one-day "wellness break" with Snoop Dogg; and Ryan Seacrest will let someone announce the Number 1 song on his radio show.

"When you see how much work Bono does personally to fight AIDS, it's almost embarrassing, it's the least we can do or anyone can do to help," Kimmel said.

Bono will celebrate the 10-year anniversary of (RED) at Carnegie Hall in New York with Vice President Joe Biden, the Edge, Stephen Colbert, Miley Cyrus, Trevor Noah and others.

"It's a big day, World AIDS Day. It's crucial this year. This is the most crucial year," Bono said.

"We can feel people going, 'Oh yeah that AIDS thing is done now,' and we're like, 'No! It's not!'"