Coldplay’s Chris Martin, Natalie Imbruglia with Play 'Summer Nights' to Honor Olivia Newton-John

Coldplay and Natalie Imbruglia performed 'Summer Nights' in a tribute to Olivia Newton-John the iconic Olivia Newton-John, who died on Aug. 8.

They were joined in their performance by musician Jacob Collier as well as a sold-out audience that sang along to, which was originally performed by Newton-John and John Travolta in the 1978 film 'Grease'.

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