This case study examined the impact of Quaver's Marvelous World of Music on an elementary school music program. Quaver's Marvelous World of Music is a software music curriculum designed to be used in Grades K-8. The purpose of the study was to examine the impact on the students' musical self-efficacy, interactive engagement, enjoyment of music class, and retention of knowledge. Fifty-four students from Grade 4-6, the music teacher, and the principal at a private elementary school in the southern United States participated in the study, which included a survey for all the students, focus group interviews of 4 students from each grade level, a teacher interview, and a principal interview. All participants in the study participated in elementary general music the year Quaver was implemented and the year prior to the implementation. The clear majority of the participants in this study had positive comments and attitudes about the impact they perceived the Quaver curriculum to have had on enjoyment of music, interaction and engagement, musical self-efficacy, and retention of knowledge. The music teacher found the students engaged because of the Quaver curriculum. She cited examples of how the students would remember the things that they had been taught with Quaver. She also related not only that she thought the students were enjoying music but also how they would tell her that they loved music class and Quaver specifically. Quaver impacted this school in a very positive way. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]