Country star Keith Urban serenaded a seriously ill woman in her hospital bed, calling her his "No. 1 fan" after dedicating his Toledo, Ohio, show to her. 

Marissa English had tickets for his concert, but was too ill to attend and is now headed to hospice care.

The 25-year-old woman's mother, Marlise Matthews, says Marissa is "the biggest fan Keith could possibly have. She adores him. Everything revolves around Keith. She loves his music and loves pictures of him around."

Marissa was born with myriad, serious health conditions including severe scoliosis, cerebral palsy and an inoperable cyst on her brain. Doctors initially thought she didn't have long to live, though she has survived a quarter of a century.

But her health is rapidly declining now, leaving her unable to attend the concert she so badly wanted to see.

Her nurses started a social media campaign, trying to give this young woman her dying wish.

And Urban brought his concert to her.

 "When he first walked in, I don’t think it quite registered as to who he was, 'till she looked at the picture of him hanging beside her bed," said her mother.

Then she pointed to to him, and "it all connected that he was actually standing at her bedside."

He took her hand and sang his hit, "Blue Ain't Your Color." He posed for photos with her, and laid his head against hers.

"She was beyond ecstatic," her mother said. "She just smiled and couldn't believe it."

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