Music Meister

Music Meister is a DC Comics supervillain. He first appeared in an episode of "". He was voiced by Neil Patrick Harris. The character later appeared in the comic book sequel to the series.
His super powers include singing to control and hypnotize anyone he wants. 
The first live-action version of the character appeared in a crossover between the live-action television series "Supergirl" and "The Flash". He was played by Darren Criss.