Wicked "What Is This Feeling?" - The Tonight Show with Jay Leno - April 18, 2007

This performance of "What Is This Feeling" from "Wicked" by the 2007 cast appearing at the Pantages Theatre in Hollywood then is from the April 18, 2007 "Tonight Show with Jay Leno" directed by Ellen Brown, one of the great live television directors who directed musical performances on "The Tonight Show with Jay Leno" that looked like edited music videos.
According to articles.latime... Eden Espinosa played Elphaba (green) and Megan Hilty played Glinda (blonde).