The Sister Act cast performed Alan Menken and Glenn Slater's "Raise Your Voice" from the show, while Chenoweth delivered "Maybe This Time" from Kander and Ebb's Cabaret. She will also appear on the October 25 episode.
To see the performances, click here. The Sister Act sequence begins at the 1:50 mark; the Chenwoeth performance begins at the 1:11:50 mark.
Don't show this again.