Interesting idea but what is a musical doing in my Flash episode, especially after the terrible shit it's out out for a while. There's been like basically no real plot advancement regarding Savitar, when will shit start going down? Atleast it resolves the stupid relationship plotline. I would have liked it more if this season had actually been doing atleast something with the main plot so far. But it kind of reminds me of those Vic Fontaine episodes from Star Trek Voyager where they do this dancing and singing to resolve internal conflicts, relationship and all lol (all those episodes sucked).
I love Legends of Tomorrow because it doesn't do any of this, and it's light on relationship drama as well. Basically it's everything the first season of Flash was i.e. embracing the fact that it's a comic book show. Its basically one theme park roller coaster episode to another.