The Flash - Season 3, Episode 17: Soundtracks

In the flashback, Barry and Nora watch Singin' in the Rain together; she tells him musicals always make things better. Back in the present, Cisco finds Barry watching the movie again.

Barry arrives at a club in the Music World to find Kara singing at the club. Kara's eyes light up as she realizes that he is there but she's unable to pull herself away from singing.

The Music Meister introduces himself to Barry and the gang; (repeats) the Music Meister tells Kara and Barry how to can get out of the music world; (repeats) the Music Meister says goodbye to the Flash/Supergirl teams.

Music Meister and everyone else in the Music World sings to get Kara and Barry to go along with the script then disappears.

Millie's fathers sing to her about true love; Cutter sings to Tommy about love.

Barry and Kara are The Flash and Supergirl and they are the 'Super Friends;' Kara and Barry sing an original song together during practice.

Barry sings to Iris as he proposes to her in a romantic way

Music Meister and everyone else in the Music World sings to get Kara and Barry to go along with the script then disappears.

Millie's fathers sing to her about true love; Cutter sings to Tommy about love.

Barry and Kara are The Flash and Supergirl and they are the 'Super Friends;' Kara and Barry sing an original song together during practice.

Flashback to Barry and his mom watching Singin' In The Rain; Cisco pesters Barry about his watching Singin' In The Rain again.

Barry appears in the night club and hears singing, which he follows to find Kara performing on stage.

The Music Meister starts singing, then Winn, Cisco and Malcolm join in for a big dance number; [0:53] repeats as The Music Meister disappears after explaining his actions.