The first of Justin Timberlake's two concerts at Madison Square Garden has been postponed.
The singer posted on Twitter Wednesday that the postponement is due to health reasons. The show originally scheduled for Wednesday has been rescheduled for Friday.
Timberlake apologized on Twitter and said, "It kills me to have to do this. I hope to see you all on Friday."
On its website, MSG says ticketholders can get a refund if they want, starting Thursday morning.
The Thursday night performance in Timberlake's "The 20/20 Experience World Tour" is expected to take place as planned.
He'll then appear on the "Tonight Show Starring Jimmy Fallon" on Friday.
Published at 8:17 PM EST on Feb 19, 2014 | Updated at 6:28 AM EST on Feb 20, 2014
Copyright Associated Press / NBC4 Washington