Fans of electric musical performances would have been wise to tune into Monday’s “Tonight Show Starring Jimmy Fallon.”
The episode, which featured a cameo from David Letterman and interviews with Betty Gilpin, Jim Gaffigan, and Mary Ellen Matthews, closed with a performance by Adam Lambert.
The vocal sensation delivered a rendition of “I Don’t Care Much” from “Cabaret.”
The episode aired on NBC at 11:35PM on the east coast — and will start at the same time in the west. A video and photos of Lambert’s performance follow:

