Crisis on Infinite Earths

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Blake Neely and collaborators Nathaniel Blume, Sherri Chung, and Daniel Chan, began work on the crossover on November 20, 2019, and the score was recorded by an orchestra on December 2. Tony Kanal and Stephen Perkins were featured performers on the score. Neely incorporated a number of musical Easter eggs into the score, some of which were "cues the production has attempted to obtain the rights to for years"; cues included the 1960s Batman television-series theme, the 1989 Batman film theme, "hints" of the Batman: The Animated Series theme, the march theme and "Can You Read My Mind?" from the 1978 Superman film, the 1990s Flash television series theme, and the Super Friends theme.
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Season 01, Episode 02 - "Crisis Aftermath II" “Crisis Aftermath” is a two-part special featuring expert analysis, interviews, and more to help break down all the big developments in the first half of the crossover. Part 1 will air immediately after the Supergirl episode, and part 2 will air immediately after The Flash.
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“Crisis on Infinite Earths” is the sixth annual Arrowverse crossover event, featuring episodes of the live-action television series Supergirl, Batwoman, The Flash, Arrow, and Legends of Tomorrow on The CW.
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Season 01, Episode 01 - "Crisis Aftermath I" “Crisis Aftermath” is a two-part special featuring expert analysis, interviews, and more to help break down all the big developments in the first half of the crossover. Part 1 will air immediately after the Supergirl episode, and part 2 will air immediately after The Flash.