Felicia Ricci was the Elphaba Standby in the San Francisco production of Wicked: The Untold Story of the Witches of Oz until it closed on September 5th 2010.
Originally the Understudy, she was eventually promoted to Standby. Felicia wrote a book about her experience as Elphaba titled Unnaturally Green. She has a YouTube channel where she provides singing tips and tricks here.