This randomized controlled study (pretest, posttest, test control group) was conducted with the aim of determining the effect of music on the severity of dyspnea, anxiety, and hemodynamic parameters in patients with dyspnea. The research was conducted in the Chest Diseases Service of a public hospital in the western region of Turkey. The number of patients included in the sample was determined by power analysis, and as a result, 60 patients were accepted, 30 in the music group and 30 in the control group. Sixty percent of the patients who took part in the study were male, their mean age was 61.21 ± 1.13 years, and their mean dyspnea severity before the intervention was 62.68 ± 22.28. The difference between the mean dyspnea severity and anxiety scores of the music group patients before and after the application of music was found to be statistically significant (P < .05), but no statistically significant difference was found in hemodynamic parameters (P > .05). In light of the research findings, it was concluded that music had an effect on anxiety and the severity of dyspnea in patients with dyspnea but that it had no effect on hemodynamic parameters.