In Crazy Ex-Girlfriend, Rebecca Bunch envisions moments in her life as musical numbers. By doing this, it helps her process her thoughts and emotions. All of the songs in the show are original, written by Adam Schlesinger, Rachel Bloom, Jack Dolgen, and others. But because of Rebecca's love of theatre, many of the series' songs pay homage to Broadway musicals.

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Crazy Ex-Girlfriend references countless musicals during its four-season run. Songs parody the music, costuming, and dancing from both classic and modern Broadway productions. Fans of Crazy Ex-Girlfriend who don't watch Broadway shows may be surprised as to just how many references there are to other musicals in the series.

Oklahoma (1943)

Darryl and White Josh break up, despite being one of the show's best couples. All their friends think that they should get back together. In the park, the cast sings, "The Group Mind Has Decided You're In Love." 

The song is inspired by Rodgers and Hammerstein's musical Oklahoma. The characters square dance while trying to convince Darryl and White Josh that they belong together. Oklahoma stars two characters who refuse to admit they're in love, just like White Josh and Darryl. 

Rent (1996)

Rebbeca decides to sue Nathaniel for purchasing shares of the law firm in the wrong jurisdiction. Their love-hate relationship is evident in the song "Horny Angry Tango." The musical number in the courtroom refers to "Tango: Maureen" from Jonathan Larson's Rent.

The musical Rent features Mark and Joanne, who are both in love with the same woman. When they meet, they tango while discussing Maureen. Rebecca and Nathaniel's tango is similar to the one from Rent, but their song is about the sexual tension between them.

Hairspray (2002)

After being diagnosed with Borderline Personality Disorder, Rebecca thinks she should stop dating. She sings, "Without Love You Can Save The World." The song parodies "Without Love" from the musical, Hairspray. However, Rebecca's song has an opposite take on love.

The number in Hairspray says that the meaning of life is love. In contrast, Rebecca argues that without love, you can spend your time doing more meaningful things. The other characters emphasize this point, wearing shirts that have hearts crossed out on them. 

Cats (1982)

Image from original Cats on the left and Crazy Ex Girlfriend Parody on the right

Throughout the series, Rebecca makes jokes about the nonsensical plot of the Cats, a musical composed by Andrew Lloyd Webber. But in the episode "I Need Some Balance," Rebecca is visited by multiple Broadway-inspired cats. The cats narrate the problems Rebecca encounters while on her date with Jason. 

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The cats include the hungry cat, the itchy cat, the funky cat, and the elated cat. Like the musical, the humans dressed up as cats sing and perform interpretive dance numbers.

Gentlemen Prefer Blondes (1949)

Split image of Marilyn Monroe in Gentlemen Prefer Blondes and Rachel Bloom in Crazy Ex Girlfriend

Rebecca finds herself in a love triangle with Greg and Josh. She sings the song "Math of Love Triangles," while resembling Marylin Monroe in the movie Gentlemen Prefer Blondes.

The movie is based on the Broadway production of the same name. In the song "Diamonds Are A Girl's Best Friend," Monroe sings surrounded by men in suits. Rebecca also sings surrounded by men, except in her case, they're trying to teach her math. The song pokes fun at the dumb blonde trope Monroe often portrays in her films.

Les Misérables (1987)

"The Buzzing From The Bathroom" is sung by the secondary character, Tim. He's horrified to learn that his wife sneaks off to the bathroom to use a vibrator. This song parodies "Empty Chairs and Empty Tables" from the musical Les Misérables.

In Les Misérables, Marius sings about his friends who died during the 1832 June Rebellion in France. He cries while looking at the empty chairs where his friends once sat. Tim's dramatic vocals echo Marius's, but his lyrics are more humorous than sad.

Chicago (1975)

When Rebbecca is in prison, she joins a group of other female inmates. She asks them all how they ended up in jail in the song "What's Your Story?" It puts a different spin on the song "Cell Block Tango" from the musical Chicago

They all sit in chairs and wear lingerie on top of their orange jumpsuits. However, the song doesn't romanticize life for women in prison like Chicago does. Instead, the number highlights the complex reasons for their arrests. 

The Music Man (1957)

Image of Music Man on the right and Crazy Ex GF parody on the right

In an excuse to spend more time with Josh, Rebecca tries to convince the tenants at his apartment complex to sign up for a class-action lawsuit. She begins singing the song “Cold Showers,” warning tenants how cold showers will lead their kids to doing drugs. 

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This song pays homage to “You Got Trouble” from The Music Man. Harold Hill persuades citizens of River City that the pool hall will corrupt children. Rebecca sings in as quick of a cadence as Harold and is just as good at manipulating the masses.

Mamma Mia (2001)

While visiting her hometown, Paula runs into her first love, Jeff, at the grocery store. But, he’s not only her first love, his penis was also the first one she saw. The song “First Penis I Saw” sounds very similar to the title number of the musical Mamma Mia

Paula embodies Donna from Mamma Mia in this song. She sings about lost love and dances on a revolving pedestal. Also, two customers sing backup vocals, parodying the girl group Donna and the Dynamos from Mamma Mia

Guys And Dolls (1950)

Image from Guys and Dolls on the left and Crazy ex girlfriend parody on the right

Rebecca's friends decide to start betting on her love life. White Josh acts appalled at this, but quickly joins in on the gambling. He sings a song called "Love's Not A Game," which is heavily inspired by the Broadway musical Guys and Dolls

Guys and Dolls is a musical about gamblers in 1930s New York. The characters wear fedoras, tap dance, and sing about dice and monogamy. "Love's Not A Game" particularly parodies "Luck Be A Lady Tonight," one of the more famous tunes from the musical. 

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