Griff has spoken to NME about collaborating with Coldplay‘s Chris Martin, and how opening for Taylor Swift at Wembley Stadium will be “one of the most surreal things in my career”.The singer-songwriter was talking to NME backstage at BBC Radio One’s Big Weekend, where she spoke of how much she was looking forward to the Eras Tour stop in the capital on June 22.“Eight-year-old me who had ‘Fearless’ on repeat wouldn’t believe this,” she said. “I’m unbelievably grateful to Taylor for all the love she’s shown me and my music.”It comes after Swift posted about Griff’s track ‘Vertigo’ on her Instagram last year.“That was very surreal,” Griff told NME.