5 Great Musical Episodes in Fictional TV Shows

TV Shows with a large number of season often turn one of their episodes in a musical as an attempt to experiment, showing more talent from the actors and as a sign of prestige.
Not every fan of fiction loves musicals, but this doesn't stand in the way of many TV series experimenting with episodes in which the story unfolds in the form of songs filled with emotion.
For some of them it doesn't quite work out (we're looking at you Fringe and Legends of Tomorrow) but others succeed not only in diversifying their formulas but also creating pieces that take their place in history. Lucifer's crew promise they'll make such an episode next year, some time ago Supernatural joined the trend...
Everything points to the fact that including a musical somewhere in the season puts the show on another level and brings about a prestige which is only available to few.
To a large extent this is due to the successful attempts of the shows listed below, which turned musical experiments from an absurd initiative, which could completely ruin the reputation of a serious show, into a good example, which modern day artist could follow and try to repeat.

The Flash - S03E17 - Duet

Supergirl and The Flash fall into a coma when their minds are transported in a world, imagined by them, where they and their loved ones have to sing so that they learn the important lesson. That they have to let loose and love. All of the actors with some experience with singing take part in the cookie plot, even those without experience and the main goal is for Grant Gustin and Melisa Beona to get back together again in the musical (the two of them started their careers with Glee).
The episode also receives some additional bonus points due to the intersection of the two shows, which is outside the scope of the standard seasonal ones. Unfortunately, although the episode is a standard musical, fans didn't rate it too well - the episode ranks 116th out of 118 aired so far in the IMDB chart (and will likely end the season as 123rd out of 125).
The reason for that may be that that the episode felt more like a filler, and that most comic book fans don't like the idea of ​​a musical in their favorite teen series, especially if the songs are too frivolous. However, the concept is well implemented and therefore the mention in the ranking is well deserved, especially in the absence of any spectacular competition.