The new song was released on Thursday with all funds going to rapper Will's i.am.angel foundation to raise money to stop violence in America
Matthew Koma shared a black and white photograph in which the actress on Instagram
The celebrities take turns to sing a line from the John Lennon classic. Priyanka sings two lines in the song. The first, "imagine there's no countries," as a duet with model Suki Waterhouse, and the second, "a brotherhood of man," as a solo.
will.i.am launched into a tirade of abuse aimed at the airline on Twitter to share his dissatisfaction
With her new movie, Mary Kom, hitting theatres we run you through actor Priyanka Chopra's journey in the film industry and how she has become a force to reckon with
will.i.am has co-produced the new song with Damien LeRoy, and it was co-written with Rahman, R&B artist Cody Wise and US producer Keith Harris.
Rapper will.i.am took to Twitter to slam an airline after he was told to leave its first class lounge as the staff told him that his membership card was fake.
It is a unique cover of the Bonnie Raitt's 1991 song that made it to Rolling Stone magazine's 500 greatest songs of all-time list.
The music video for songstress Miley Cyrus' Wrecking Ball topped the list of Vevo's most-viewed music video of 2013.
Singer Will.i.am, who has worked with pop star Britney Spears, says she is the most "focussed and disciplined" singer in the industry.
Actress Priyanka Chopra, who has worked with Bollywood biggies like Shah Rukh Khan and Hrithik Roshan, has also recorded tracks with international singers like Pitbull and Will.i.am, and is willing to go wherever her work takes her.
Singer Kylie Minogue has confirmed her presence as a judge in the upcoming season of Britain's singing reality show The Voice.