“Duet” will feature singing from stars Melissa Benoist and Grant Gustin
Following a brief look last night, The CW has just revealed new “Duet” photos that show off the upcoming Supergirl / Flash musical crossover. “Duet,” a Flash episode, represents the event’s second half and you can explore the fun with eight new stills in the gallery viewer below!
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The Supergirl Flash musical…
