The Flash Supergirl Musical Crossover: 14 Easter Eggs & References In 'Duet' You Need To See

6. Guys And Dolls

The Flash Supergirl Musical Stein Joe
The CW

Another one of the episode's musical highlights comes in the form of a powerhouse triple threat, with Jesse L. Martin, Victor Garber, and John Barrowman all getting the chance to show off their vocal talents at the same time.

The number they perform is More I Cannot Wish You, which comes from the musical Guys and Dolls. It's not really much of a surprise a song from the musical appears, given all the characters talking like gangsters is almost certainly a nod to it.

As for the song itself, it's a fitting number for the fathers of this world to be singing, but it's also worth noting that these three (in their real guises) are the last remaining major father figures in the Arrowverse, which sure does love its big emotional dad moments.

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