what episode does supergirl go on the flash
Duet
title: Supergirl (season 3) text: season began on July 6, 2017 and ended on April 28, 2018, taking place in Vancouver. In May 2017, The CW president Mark Pedowitz officially announced plans for a four-show Arrowverse crossover event, crossing over episodes of the television series "Supergirl", "The Flash", "Legends of Tomorrow", and "Arrow". The crossover, "Crisis on Earth-X", began with "Supergirl" and a special airing of "Arrow" on November 27, 2017, and concluded on "The Flash" and "Legends of Tomorrow" on November 28. The crossover also sees Benoist, Brooks and Jordan playing the Earth-X versions of their characters. The season premiered on The CW in title: Supergirl (season 2) text: season 5 episode 8 and concludes on "Legends of Tomorrow" season 2 episode 7. Similarly, the episode "Star-Crossed" ends with Music Meister hypnotizing Kara and fleeing to Earth-1 to do the same to Barry, thus initiating the events of "The Flash" season 3 episode "Duet". The score for the season was composed by Blake Neely. The season began airing on The CW on October 10, 2016, in the United States, and ended on May 22, 2017. It premiered on the same day as the United States in Canada on Showcase, and on October 24, 2016, in the United Kingdom on title: Supergirl (TV series) text: and "Legends of Tomorrow" (on the second night). In May 2018, "Arrow" star Stephen Amell announced at The CW upfronts that the next Arrowverse crossover would feature Batwoman and Gotham City. The crossover is slated to air in December 2018, ahead of a potential 2019 solo series for the character. "Supergirl" was confirmed to have a participating episode in August, which would close out the three-part crossover, trading nights with "The Flash" just for the event. Therefore the show’s participating episode airs on Tuesday, December 11. In July 2015, a four-page preview comic entitled "Sister Act", written by Ali Adler, title: Supergirl (TV series) text: Supergirl appears in "Invasion!", a crossover episode of "The Flash", "Arrow" and "Legends of Tomorrow", when she's recruited by Barry Allen and Cisco Ramon at the end of "Medusa" to help fight off an invasion by the Dominators. "Supergirl" and "The Flash" also featured in a musical crossover, featuring several covers of existing songs along with two original numbers. Similar to "Invasion!", the crossover begins at the end of the "Supergirl" episode "Star-Crossed" and primarily takes place during "The Flash" episode "Duet", featuring the Music Meister as the antagonist who puts both The Flash and Supergirl in a shared hallucination. title: Worlds Finest text: Worlds Finest "Worlds Finest" is the eighteenth episode in the first season of the CBS television series "Supergirl", which aired on March 28, 2016. The episode's teleplay was written by Andrew Kreisberg and Michael Grassi, and directed by Nick Gomez. The episode features a crossover appearance by the title character of the CW series "The Flash" (also developed and produced by Greg Berlanti and Kreisberg), marking the first episode of the series to feature a character from the Arrowverse, and the first character from a CW series to cross over to a CBS series before the show itself moved to