Jon Anderson's health woes continue, as he reveals a new ailment that will require surgery. Anderson, who saw his former band Yes move on without him during a previous bout of respiratory illness, says he will have to undergo a procedure to correct a severe sinus issue.

Anderson thanks fans for their "kind thoughts and words regarding" his situation in a recent Facebook post: "I will be better very soon. I was told by my specialist at UCLA that I will be a different person after the operation."

While Yes continued forward with a new singer, Jon Davison, Anderson has been working in a new group alongside violinist Jean-Luc Ponty. They debuted the Anderson-Ponty Band in a September 2014 concert held at Aspen, Colo. The show was recorded for later release.

There's no word yet on whether this sinus operation will impact Anderson's previously announced plans to tour this summer with the Anderson Ponty Band.

Despite this latest setback, Anderson has remained in good spirits. He said he jokingly asked his doctor, "Will I be able to play the violin?" and the doctor replied, "Yes, of course." Anderson, who doesn't know how to play the violin, says he responded, "Wow! Now, that's cool."

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