Caissie originated the role of Molly in both the West End and world premier Manchester productions of Ghost The Musical. Most recently, she starred as Sheila in the 2009 Tony® Award winning Broadway revival of Hair, reprising her role in the subsequent West End transfer. Other Broadway credits include: Elphaba in Wicked (Los Angeles, Broadway u/s); Penny Pingleton in Hairspray (Broadway, first national tour); and Maureen in Rent (national tour). In concert, she was a guest soloist for The United States Military Academy at West Point. Recordings include the original London cast album of Ghost The Musical and the Grammy® Award nominated cast recording of Hair, from which her rendition of "Easy to be Hard" was named USA Today's Pick of the Week.