David Crosby is no stranger to the operating room. Several years ago, the singer-songwriter had a liver transplant and last week. he was back under the knife for heart blockage.

According to Something Else! Reviews, a routine visit to his doctor revealed that Crosby had a 90 percent blockage in his left anterior coronary artery. He underwent a cardiac catheterization, in which two stents were inserted into the heart.

Crosby announced that, because of the health problems, he will postpone several shows that he had slated for later in the month, but the tour with Crosby, Stills and Nash scheduled to start March 4th will probably go on as planned.

Best of lucky and a speedy recovery to David Crosby