Justin Timberlake's Wednesday Madison Square Garden Show Rescheduled

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Justin Timberlake accepts the Favorite Album award for 'The 20/20 Experience' onstage at The 40th Annual People's Choice Awards in Los Angeles, California.

The show will be held Friday, while Thursday's concert is scheduled to go on as planned

The first of Justin Timberlake's two concerts at Madison Square Garden has been postponed.

The singer posted on his Twitter feed Wednesday that the postponement is due to health reasons. The show originally scheduled for Wednesday (Feb. 19) has been rescheduled for Friday (Feb. 21).

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.