Dauphin, Canada
The ``Big Yellow Taxi'' songwriter is a seven-time Grammy winner and a member of the Rock and Roll Hall of Fame.

 

Canadian songwriting legend Joni Mitchell is in a coma and unresponsive, according to TMZ.

 

The gossip website reported Tuesday that Mitchell was in hospital with ``no immediate prospects for getting better.''

 

TMZ reports that Mitchell's longtime friend Leslie Morris filed legal documents to obtain ``conservatorship'' over the Saskatchewan-raised songwriter, because no other close relatives were available.

 

The 71-year-old Mitchell was admitted into intensive care last month after being found unconscious in her home.

 

The ``Big Yellow Taxi'' songwriter is a seven-time Grammy winner and a member of the Rock and Roll Hall of Fame.