American actress, Amy Adams, who portrays Giselle, had previously "worked in musical theater before [she] moved to Los Angeles" in order to pursue a career as a film actress, and was therefore "very comfortable with the idea of singing". Citing both actress and singer Julie Andrews and several Disney Princesses as musical inspiration, Adams decided to perform the film's first song, "True Love's Kiss", in the style of an operetta before eventually replacing this with a more Broadway musical-style voice for "Happy Working Song". Having just recently arrived in New York City after having been magically transported there from her fantastical world of Andalasia, a lost and hopelessly confused Giselle is discovered wandering around by Robert, a single father and divorce attorney, and his daughter Morgan. Robert decides to offer his assistance to Giselle by inviting her to spend a night's shelter in the safety of their apartment. The following morning, Giselle awakens to find Robert's apartment in a complete state of disarray. During the "Happy Working Song" musical sequence, described as one of the film's "large scale production numbers", Giselle, who is very much appalled by the untidy state of Robert's Manhattan apartment, decides to "repay ... the favour" by taking the liberty of confronting and cleaning up the apartment's mess herself. By performing a brief aria and "utilizing her animal-charming abilities", Giselle musically "summons the city's animals" in order "to help her tidy it up". This gesture and scene serves as a reference to similar scenes and musical sequences from preceding Disney animated fairy tale films such as "Snow White and the Seven Dwarfs "(1937) and "Cinderella" (1950). Demonstrating and suggesting "that Giselle really does have some magical power, even in [the real world]", – according to Sean Axmaker of the "Seattle Post-Intelligencer"," ""When she breaks into song ... sewer rats and cockroaches arrive to help with the housework" – the aria is immediately responded to by several animals, creatures and "vermin" typically associated with New York City, including rats, pigeons, roaches, and flies – visually meant to represent "makeshift 'forest friends'" – "as opposed to the woodland critters of the movie's opening animated segment." According to film critic Brent Simon of "Shared Darkness", the comedic gag serves as one of the film's "amusing ways to contrast the two worlds" of Giselle's fictional Andalasia and the real-life New York City.