"Grease" Lost Demo!

From 24/7 News:

(Undated) -- Barry Gibb is talking about discovering a long-lost early demo for the title track to the 1978 hit film "Grease." In a recent interview, the Bee Gees legend said he remembers writing the iconic song sung by Frankie Valli "in one afternoon." Specifically, Gibb says it took him about two hours to write the lyrics, but admits it rarely takes that short amount of time. Paramount's "Grease" 40th anniversary edition in Four-K Ultra HD, Blu-ray, DVD and digital will be available tomorrow.