​Joni Mitchell remains in hospital, getting "stronger"

Joni Mitchell remains in the hospital and is "resting comfortably," according to an update on the website, JoniMitchell.com. "She continues to improve and get stronger each day," the post said.

The singer was hospitalized last Tuesday in Los Angeles after being found unconscious in her home.

It's unclear what caused her to become unconscious.

The 71-year-old singer-songwriter revealed last year to Billboard that she has a rare skin condition, called Morgellons disease, which prevents her from touring.

The eight-time Grammy winner is the voice behind such songs as "River," "Both Sides Now," "Woodstock," "Chelsea Morning" and "Big Yellow Taxi." She was inducted into the Rock and Roll Hall of Fame in 1997.

Last year, Mitchell released four-disc box set. Her most recent studio album, "Shine," came out in 2007. She recently attended Clive Davis' pre-Grammy bash in Los Angeles.