You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what episode is the flash and supergirl crossover musical?" whose answer is "Duet".
Each document should contain about 30 words, and these documents should contain useful information.

Query: The Flash and Supergirl crossover musical
Useful Output:

Doc 1: The episode - titled Duet - sees the super friends placed into a coma by new villain Music Meister (Darren Criss).
Doc 2: The Music Meister traps Flash and Supergirl in a movie musical, which brings some light to a dark season.
Doc 3: Stream Moon River - The Flash/Supergirl Musical Crossover (The Flash 3x17) by Azure Lakes on desktop and mobile.
Doc 4: “Duet,” the most recent episode of The Flash, does an admirable job of reaching for that bar and meeting it in its own way.
Doc 5: The Flash 3x17 "Duet" Season 3 Episode 17 Sneak Peek - DARREN CRISS (“GLEE”) GUEST STARS AS THE MUSIC MEISTER IN THE FLASH AND SUPERGIRL