The 1975 stopped their secret Glastonbury performance after a can was thrown on stage by an audience member.
The indie rock band halted their set as the music festival got under way on Thursday June 26 when a fight broke out in the crowd.
According to NME.com, frontman Matthew Healy stopped singing mid-performance and said: "Ladies and gentleman I'm sorry to disrupt your peaceful Glastonbury but someone just threw a can on stage. I won't have people fighting at my Glastonbury."
The performance resumed after security quickly intervened and removed a male reveller from the audience.
The group - also consisting of Adam Hann, George Daniel and Ross MacDonald - proceeded to perform their hit song 'Chocolate' as well as other tracks from their 2013 debut album.
As The 1975 closed their hour-long set, Matt introduced another surprise act to the stage - electronica group Metronomy.
Referring to the festival's headliners, he quipped: "Ladies and gentlemen, we have to hurry it up as we have a very special guest up next. It's not Dolly Parton ... or Metallica..."
Metronomy performed a slew of their most popular songs including 'Holiday' and 'Radio Ladio'. They then dedicated 'The Look' to country music legend Dolly Parton to cheers from the crowd.
Dolly, 68, is one of this year's notable acts, while the headliners are Metallica, Kasabian and Arcade Fire.
Tagged in Dolly Parton Kasabian Metallica