Bruno Mars, Beyoncé also set to perform
"It's so easy to get despondent and despairing about things in the world," singer says
Track will appear on group's upcoming album 'A Head Full of Dreams'
Band unveil '2001: A Space Odyssey'-inspired video for 'A Head Full of Dreams' single
Gwyneth Paltrow provides background vocals on 'A Head Full of Dreams' track
Band joined by dancing gorillas at their first AMAs performance in seven years
Band performs "Up&Up" for first time at Tidal live-streamed gig
Coldplay team with Beyoncé, Blue Ivy, Gwyneth Paltrow for Rumi-inspired LP
"Everyone who got asked to sing on our album has an important part in our lives," Chris Martin said of 'A Head Full of Dreams' collaborations
Band also unveils "ebullient," disco-flavored first single "Adventure of a Lifetime"
Poverty-eradicating Central Park show draws an estimated 60,000 people
Global Festival curator Chris Martin also appears during Ed Sheeran's set to sing "Thinking Out Loud"
Beyoncé, Pearl Jam and more battle poverty in Central Park this weekend
Read up on blockbuster LPs from Kanye West, Lana Del Rey, Fetty Wap and many more
New York City concert scheduled for September