Recently there's been announced a Supergirl/Flash crossover and I'm not sure that 's a great idea.
This is definitely not riding the Supergirl hate bandwagon that is too annoyingly prevalent if you read the comments on most of the Arrow/Flash Facebook posts. I love SG and I think it's a great show. Of course so is the Flash. But I don't understand how they can suddenly induce a musical into these two shows without utter breaking the plot and the tone.
I'm aware the Flash is on the lighter side of CWDC and Supergirl more so. But even then it's hard to seriously imagine suddenly everyone bursting into song and dance. I understand there's a wealth of singing talent across both shows, but I do believe this musical business would work better as a side promo or bloopers thing. Fans of Glee might love it, but for the legion of SG haters who seem to not be able to handle a show that is not about someone putting arrows into people and watching his friends die one by one (I think Arrow is great too), this musical business may just be fuel.