The CW is set to air a musical extravaganza crossover between The Flash and Supergirl next week, and it looks like it could either be totally awesome or an absolute flop.
TV has seen a handful of musical and music-based TV shows over the years, and some have been far more successful than others.
In honor of all things musical, take a look at our picks for the 11 best musical episodes of all time!
Every once in a while, however, we get a musical episode that is especially unforgettable, whether because it was hilarious or poignant or just plain bizarre.