John Travolta remembers Olivia Newton-John
Fans, friends and co-stars are respecting Olivia Newton-John
The adored vocalist and "Oil" entertainer passed on at age 73
Albeit a reason for death wasn't uncovered,
Newton-John had battled bosom disease for quite some time.
Among those offering recognition via web-based entertainment
"Truly miserable to catch wind of the death of Olivia Newton-John.
My most memorable genuine crush as a youngster.
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