Fascinating look at Petipa

Many ballets are credited with choreography “after Petipa,” but what does that mean? As part of the Guggenheim Museum's "Works and Process" series, Pacific Northwest Ballet’s education programs manager and dance historian Doug Fullington and company dancers look at three famous classical duets—the Black Swan pas de deux from Swan Lake, and the Blue Bird pas de deux and Grand pas de deux from The Sleeping Beauty—to explore how they have evolved over time.