Singer Neil Diamond assured his Columbus fans that they would receive a refund on their tickets, after he performed with a hoarse voice.

According to reports, the 67-year-old singer attended the concert at Ohio State University without mentioning to his fans that he was suffering from acute laryngitis. He continued singing in a raspy and hoarse voice despite his health problem.

Several upset members of the audience left the Monday concert early, when seeing that the star was not up to their expectations.

On his official website, the singer of “Sweet Caroline” apologized to his fans in Columbus, asking them to give him a few days to figure out a way to make it up to them.

“I haven't let you down before and I wont let you down now. Until you hear from me again remember, You are the sun. I am the moon. You are the words. I am the tune. Forgive me. I love you. Neil,” the statement read.

Diamond spokeswoman Eve Samuels informed the concertgoers that the singer will offer a refund to all those who place a request before Sept.5.

Diamond also postponed upcoming concerts scheduled for August 27 at Green Bay Resch Center and an August 29 date at Scottrade Center St. Louis. The concerts were rescheduled on September 12 and, respectively, on September 10.

Diamond received a Sammy Cahn Lifetime Achievement Award in 2000.