Background and Context: Efforts to engage adult learners in computer science in the United States have been largely unsuccessful. While research examining the use of music for teaching computer programming with K-12 learners is emerging, little research with adult learners exists. Objective: This study evaluates the effect of computer coding musical compositions on adult learner's attitudes towards computer science. Method: This study utilized the TunePad programming environment to engage adult learners in a computer programming course. Data were obtained through an attitudes towards computing survey and individual interviews. Findings: Quantitative data from participants suggest that computer coding musical compositions positively affected their attitudes toward computer science. Findings from interviews provide insight into how these types of learning activities affected attitudes. Implications: Results of this research will be useful for organizations tasked with assisting adult learners in re-training and upskilling in computer science.