She was one of the most-anticipated guests for the upcoming Stagecoach Festival, but now Loretta Lynn has been forced to cancel her appearance at next weekend's two-day music event in Indio, Calif., due to her ongoing recovery following recent knee surgery.

"My [doctor] says I have a torn cartilage in my right knee," the iconic entertainer writes on her website. "And they need to fix it, so I had to cancel and reschedule some of my upcoming shows. I love all of you and thank you again for your prayers."

The 76-year-old previously rescheduled several shows due to the surgery, but had hoped to recover enough to perform at the Stagecoach festival. Still, there will be plenty of music to fill the days, including performances by Rascal Flatts, Carrie Underwood, Darius Rucker, Kenny Chesney, Josh Turner, Jack Ingram, Kenny Chesney and newly-added artist k.d. lang.

Loretta's next scheduled performance is May 4 in Coarsegold, Calif., but there is no word yet when she will officially resume her regular concert schedule. Check for tour updates here.