Remembering Olivia Newton-John's 10 Best Country Hits Take a look back at these 10 impactful Olivia Newton-John songs that established her as an important new voice in country music.

Olivia Newton-John initially refused to record "Physical" due to its racy lyrics, but her lawyer John Mason convinced her to embrace the edgy song that became a major '80s hit.

The cult favorite turns 45 today — which is also the third anniversary of Olivia Newton-John's death.