Ok, I'm a little late on this one . . .
Yesterday (October 28), there was a union of Tourzilla opening acts on the Tonight Show.
The musical guest was Steve Nieve (the keyboard player of Elvis Costello), who is promoting his new album. For the song performed, Elvis Costello provided the vocals and Fiction Plane's Joe Sumner played bass. Too bad the bass was essentially inaudible. But on the positive side, Leno did specifically mention Joe twice.