Naman Ramachandran Coldplay and Natalie Imbruglia paid fulsome tribute to Olivia Newton-John, who died last week, at London’s Wembley Stadium on Tuesday evening. Imbruglia sang Newton-John’s part of hit song “Summer Nights” from “Grease,” while Coldplay’s Chris Martin sang John Travolta’s part with Jacob Collier joining him during the chorus. Newton-John had played Sandy and Travolta Danny in the 1978 film.Earlier, Imbruglia and Coldplay also performed “Torn,” Imbruglia’s debut single, which was first recorded in 1993 as “Burned” in Danish by Lis Sørensen, followed in 1994 by Ednaswap, and in 1996 by Trine Rein.It was the third Wembley play date for Coldplay’s Music of the Spheres world tour.