UPDATED 3/16--Singer/songwriter Billy Joel [ tickets ], who was scheduled to play two concerts this month, has called off those dates and entered rehab for alcohol abuse.

"Following a recent bout of severe gastro-intestinal distress, Billy Joel has checked himself into an undisclosed rehabilitation facility for treatment of alcohol abuse," said a statement issued by his publicist. "Mr. Joel has asked that his privacy be respected."

Joel has postponed a show that was to take place March 31 at America West Arena in Phoenix. According to promoters, tickets for the original show will be honored on the rescheduled dates, which hadn't been announced at press time.

Joel was also scheduled to perform a March 26 concert at the Hard Rock Hotel in Las Vegas. That show has been canceled, and ticket refunds can be obtained at the point of purchase, according to the Hard Rock's website.

In February, Joel checked into a New York hospital after suffering severe stomach pains.

Nearly three years ago, Joel spent 10 days at a Connecticut rehab facility, for what was described by his publicist said was "a specific and personal problem that had recently developed." At that time, he postponed a series of planned concerts with Elton John.