The Chicks sang "Hopelessly Devoted to You" from "Grease" as a tribute to the late Olivia Newton-John on Saturday night.
“We lost a worldwide sweetheart ... Olivia Newton-John,” Maines told the crowd.
In fact, the crowd joined Maines in singing the melodramatic words of the timeless ballad, which was notably performed by Newton-Sandy John's Olsson in the 1978 musical film "Grease."
The actress and singer died on August 8th after a battle with breast cancer.
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