Flroence Welch gave an impromptu performance on the London Underground, after she was spotted by fellow travellers.
The 26-year-old London-born singer went to see Kendrick Lemar's sell-out gig at the Hammersmith Apollo at the weekend, and then caught the Tube home, where she was spotted by fans, who started a singalong, which she happily joined in.
A source told The Sun: "Florence jumped on the Tube after Kendrick and, as you can imagine, every carriage was packed.
"At first she tried to keep a low profile but it didn't take long for a few people to recognise her.
"They started singing You've Got The Love but instead of bailing at the next stop, Florence joined in. It was brilliant. She finished You've Got The Love before changing to the Kendrick Lamar song Backseat Freestyle."
Nicola Roberts and Tinie Tempah were also among the crowd at Kendrick's show.