Snow White (Disney character)
Originally, Disney could not find what they thought was a suitable voice for Snow White. Around 150 girls auditioned for the role of Snow White, including well-known actresses such as Deanna Durbin, whose voice seemed too old to Disney. One assistant to Disney called music teacher Guido Caselotti, complaining that Hollywood had no singing girls. Caselotti wanted to offer to send their best to listen to the students, but it turned out that his 20-year-old daughter Adriana overheard a conversation on another phone in the house, and she began to sing in a young girl's voice. Her father was confused and told his daughter to get away from the phone, but the casting director liked her voice and invited her to audition. After Walt Disney heard her, he immediately gave her the role. The studio signed a multi-page contract with Adriana Caselotti: she was forbidden to sing in a movie or on the radio before or after the movie premiered because Walt Disney did not want the voice of Snow White to be heard anywhere else. Instead, she received $970 (now worth approximately $).
Princess Jasmine
The casting of American actor and comedian Robin Williams as the Genie inspired the studio to recruit similarly talented voice actors capable of matching his pace. The filmmakers had originally envisioned Jasmine's voice as similar to that of actress Lauren Bacall. Jasmine's speaking voice is provided by American actress Linda Larkin. The role was only one of several auditions Larkin had scheduled during the same week in which she auditioned for "Aladdin", and she originally underestimated the scope of the project, joking, "I thought it was going to be something like "Duck Tales" (sic)". Initially presented with only a few pages of the screenplay, Larkin found that she was particularly drawn to Jasmine's "spirit of activism", in addition to the ways in which character was both similar to and different from previous Disney heroines. Princesses Snow White, Cinderella and Aurora had been childhood favorites of the actress. Larkin's first audition was held in a Burbank, California recording studio, in which she performed solely for the film's casting director. The side used for Larkin's first audition was the scene in which Jasmine meets Aladdin in the marketplace – their first encounter. Jasmine's line "It's all so magical" helped convince Larkin that she was "meant" to voice the character. Although Larkin's voice was significantly different from what the filmmakers had originally envisioned for the character, her interpretation gradually changed their minds. 
In the form of an extensive series of callbacks, Larkin returned to the studio on several different occasions over the next few months. While the audience of studio executives and filmmakers continued to increase, the amount of actresses competing for the role gradually decreased accordingly as the audition process neared completion. Larkin's final audition lasted a total of four hours, during which she read through the entire script for the first time. The animators were also provided with an opportunity to animate to Larkin's voice for the first time. The actress was finally cast several months later, by which time she had nearly forgotten she had ever auditioned. Six months into recording, however, Larkin was forced to re-audition for the role by Disney executive Jeffrey Katzenberg, who felt that the actress' voice lacked the authority required to voice a princess. However, Clements and Musker disagreed with him, and managed to trick Katzenberg into not firing Larkin by staging a fake recording session during which they had the actress speak lower and slower in Katzenberg's presence, only to have her return to her natural voice thereafter. Larkin recorded only one scene alongside her co-stars Williams and Scott Weinger, voice of Aladdin. Apart from some rough, unfinished storyboards and drawings, Larkin did not see much of her character until the film was finally screened at the Museum of Modern Art.