Everyone You Want to Sing in the Flash/Supergirl Musical Crossover Will Sing

If there’s one thing to look forward to in 2017, it is the beaming explosion of pure, unadulterated joy that will be the Flash/Supergirl musical crossover episode. The CW has revealed new details about the special event, and now we know who’ll be lending their pipes to the proceedings—and when to expect it.

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Source: io9