In The Flash, there is a musical episode that serves as a crossover with Supergirl and a way to further the romance of the characters of the Flash and Iris West. I thought that the Music Meister was quite a clever addition, as he seems to be symbolic of something. Possibly the writers, as he is this high-powered being that serves as a plot device that also makes the story into a musical. Seems kind of lazy, but interesting. But is there an in-universe reason for his high-poweredness? Has a writer or showrunner said anything?
Music Meister is originally from Batman Brave & the Bold
The villain first appeared in the 2009 episode "Mayhem of the Music Meister!". In that incarnation, Music Meister was an ordinary human who discovered that when he sang, he could hypnotize people to do their bidding.
Bullies used to pick on me because I sang in choir /
but something very strange occurred as I kept singing higher /
the ruffians around me quickly fell into a trance
and it was then with wicked glee I made those puppets dance!
Music Meister in the Arrowverse is an extra-dimensional being
The Arrowverse version of Music Meister is an extra-dimensional being. This is the second such being in the Arrowverse, with Supergirl having Mxyzptlk over on her show. We don't know a lot about where they come from, or if the two are related, but they appear to be all-powerful.
Unfortunately, I can't find any information about why the writers or showrunners decided to make Music Meister this way. Aside from the name and the general music motif, the version we see in the Arrowverse has little in common with the original version.
And I think it's a shame, because a villain who can force an entire town to do his bidding just by singing sounds way more appealing to me than what we got.
"Star-Crossed" was an excuse to give actors who could sing a chance to do so
The episode contained several Glee cast members:
- Grant Gustin (The Flash)
- Melissa Benoist (Supergirl)
- Darren Criss (Music Meister)
And others who are talented Broadway singers:
- Jesse L. Martin (Joe West), starred in Rent
- Victor Garber (Dr. Martin Stein), member of The Sugar Shoppe
- John Barrowman (Malcolm Merlyn), prolific singer
If you ever wondered why Martin Stein and Malcolm Merlyn were in this episode, that's why.