olivia newton-john

She had the entire audience singing along.

Urban and his wife, Nicole Kidman, offered a touching memorial statement for Newton-John in the wake of her death.

She was one of the biggest multi-genre stars of her generation.

Not every artist finds country success when coming in from a different genre ... but these men and women did!

These stars have battled the life-threatening disease.

She was all smiles and jokes.

Women have ruled the country charts for decades by singing about far more than just love and heartache.

There are many -- too many -- country stars who have had cancer or have been personally affected by it in some way.