Joni Mitchell has been rushed to hospital, according to reports.
The 71 year old – who’s best known for her single Big Yellow Taxi – was found unconscious at her home in LA yesterday afternoon, and rushed to a nearby hospital.
It is not immediately clear what caused her to lose consciousness.
A statement released on her website said she "regained consciousness on the ambulance ride to an LA area hospital".
And the Canadian-born artist is "currently in intensive care undergoing tests and is awake and in good spirits," it added.
In December Joni told Billboard magazine that she had a rare skin condition, Morgellons disease, which prevented her from performing.
"I can't sing anymore - don't miss it. I can't play anymore - don't miss it. I've got all these instruments laying around and hopefully one day I'll pick them up," she was quoted as saying. However Morgellons is a controversial condition and is not recognised by mainstream medical authorities.
Sufferers say they experience crawling and stinging sensations under their skin. But many doctors believe it is a psychiatric disorder.