Grease: John Travolta and Olivia Newton-John Reflect on THAT Finale Reveal | rETro

ET spoke with the cast of ‘Grease’ about turning the hit Broadway musical into a cinema classic. John Travolta reveals who else was considered to portray Sandy, and why he knew Olivia Newton-John was the only person for the role. ‘Grease Sing-a-Long’ will air June 7 at 8:30 p.m. ET/PT on CBS.

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