The Flash, Season 3

Music Meister:
[enters the room clapping] Bravo! Round of applause, Standing O, that was so GOOD! I loved it! That was a hell of a show, and you two [motioning Iris and Mon-El] I guess your love was strong enough after all. Beautiful.

Cisco:
Man, how did you get out of the cell?!?

Music Meister:
Cisco, do you really think that cell is gonna just hold me?

Barry:
Nah, I'm sorry, what's going on? Why did you do this to us?

Music Meister:
I did it because I believe in the good guys. I told you when we first met: It was to teach all of you a lesson. 'Cause I see everything. And I saw two people with two broken hearts.

Kara:
So the lesson was...?

Music Meister:
Love, Supergirl. Love is about letting yourself be saved. It's not just about saving other people, even if you are superheroes. Anyway, I'm sorry that I had to like, mess with you all, but I was just trying to get you to play the game, do the song-and-dance.

H.R.:
Are you from another earth, multiverse, universe, something?

Music Meister:
Yeah, you wouldn't even understand where I come from.

Barry:
Wait, I'm sorry, that's it? You're just gonna teach somebody else a lesson?

Music Meister:
Yeah, that's exactly what I'm gonna do. [singing] Think of your fellow man, lend him a helping hand. Put a little love in your heart. [vanishes]