Chris Martin and Lily Allen have performed at Glastonbury boss Michael Eavis' 80th birthday party
Music's most famous farmer had previously claimed the event would be 'low key'
Coldplay emerge as bookies' favourites to headline Glastonbury Festival 2016
Adele, Blur, Foo Fighters and Muse also tipped for next year's event
Coldplay invited Ariana Grande on stage at Global Citizen Festival yesterday – watch
Grande and Chris Martin played 'Just a Little Bit of Your Heart' together
Coldplay run through new song during Global Citizen Fest soundcheck - listen
Fan-filmed clips from New York briefly show Chris Martin and co's latest
Coldplay and Adele reportedly releasing new albums this autumn
Coldplay's record is thought to be called 'A Head Full Of Dreams', while Adele is expected to release '25' shortly
Coldplay 'looking at' bailout for Kids Company project
Band had donated a reported £10 million to the controversial charity
Coldplay, Beyonce and Pearl Jam to headline Global Citizen charity festival
Ed Sheeran will also perform at the New York free event in September
Coldplay's Chris Martin plays impromptu gig at bar in Delhi - watch
The singer teamed up with Indian musician Vishal Dadlani for the 'jam' session
Coldplay's Chris Martin is the world's 'most listened to dad' on Spotify
The streaming service rank musical dads for Father's Day. Eminem is second, Kanye West comes in third
Coldplay's Chris Martin performs at funeral of Joe Biden's son - watch
Beau Biden, son of the US Vice President, died from brain cancer on May 30