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  • F.T. Wolf

Review: Duet (The Flash: S3E17)

Updated: Jul 2

From all of the crossovers that the CW superhero shows have done, The Flash episode 'Duet' has to be the weirdest and most unique. Unlike what you would expect from a crossover there is no world-ending threat to be found. Instead, The Flash and Supergirl come together for a musical outing. Why you might ask? Because it's something that the cast and crew of both shows just really wanted to do. You see, many members of the cast, and this extends to the other 'Arrowverse' shows as well, have a background in music and theatre. Both shows main leads, Grant Gustin and Mellissa Benoist have also starred in Glee and it's this connection that started the ball rolling for this musical crossover to actually happen.

The plot of the episode is very simple and straightforward. Both Supergirl and The Flash get put in some sort of dreamworld by the episodes villain the Music Meister, played by Darren Criss yet another Glee actor, which is set up entirely as a musical. The only way to escape this world is for Barry and Kara to follow the script and make it to the end while staying alive along the way. The plot itself is rather predictable and there is no real conflict to be found for our heroes. Barry even remarks during the episode "that everything really is so much easier in musicals", but the plot of the musical isn't really meant to be very interesting. It's just an excuse to have the musical elements within the episode and its more about Barry and Kara interacting with each other and the characters in the musical that is the episodes focus.

There some smart writing on display here in how it uses its unconventional setup to still move the plot of both shows forward. Both Barry and Kara are experiencing some troubles in their love life and the show uses the musical as a way for them to self-reflect on these problems. By seeing the musical equivalent of their romantic partners be in love with each other in a very Romeo & Juliette like fashion they start to reevaluate the relationship they have with them. It's a smart way to give the episode some relevance in the greater story of both shows and also keeps the musical and real-world stories from becoming too disjointed.

Speaking of the musical elements, the episode pulls manages to pull these off very well, much better than I anticipated even. The episode pays homage to musicals like 'singing in the rain&#x