What about the Two-Four, the Invigilante and the Nanaimo?

"[I]f we can get a dance sequence in there on top of it, I would love to do that. Listening to Joe as the lounge singer, singing, and to see Grant and he was karaoke-ing first season, and even watching Danielle, not being able to sing ... I'm just really excited, to be honest, to see how it all comes together," showrunner Todd Helbing said during an interview with IGN. "I know Greg [Berlanti] is very close to this story. He's been thinking about it -- I don't know how long, probably not just yesterday, you know what I'm saying? He's been percolating. Seeing Jesse sing, seeing Grant sing, it's just one of those -- like whoa, we can totally pull this off. I don't know why we wouldn't do this. Let's go for it. This year in general we're really swinging for the fences."

The Flash Season 3 will premiere Tuesday, October 4 at 8 p.m. ET/PT on The CW, and Supergirl on Monday, October 10 at 8 p.m. ET/PT on The CW.