MSG Entertainment, the production company for Radio City Music Hall, announced Friday that it is postponing "Heart and Lights," its new live spectacle starring the Rockettes, until next year.

The show, which was to have featured animatronic puppetry including a 26-foot-tall Statue of Liberty, was set to begin previews Thursday and open April 3.

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The company's statement said that despite confidence "that the final production will be a spectacular, one-of-a-kind show, it has become clear that additional work is needed to deliver the unforgettable experience our customers have come to expect from us."

A spokeswoman for MSG said some 100,000 tickets had been sold -- about $5 million in sales -- for the show with "groundbreaking technology" involving lasers and thousands of LED lights.

MSG said that all purchases by phone or Internet through Ticketmaster will be refunded automatically; other tickets will be refunded at the point of purchase. The Dolan family owns controlling interests in MSG and Cablevision. Cablevision owns Newsday.