Shes joking about the master class thing, but also not.
Even the audience gets to sing a line or two, with her encouragement.
(She did Barbra Streisands version of As If We Never Said Goodbye.)

Credit: Bruce Glikas/WireImage
Chenoweth also give her two backup singers, Crystal Monee Hall and Marissa Rosen (another Broadway debut!
Shes a good host, but shes also the star.
Thats fitting for a concert where the star makes a point to include and celebrate so many others.

Nellie Beavers