Past research has identified increases in prosocial behavior in people who listen to a prosocial song, relative to those who listened to a neutral song. However, research explaining how prosocial music can lead to prosocial behavior is understudied. In the current study, I aimed to investigate the role of mood as it related to a prosocial song’s influence on prosocial intentions. It was hypothesized that those who listen to the prosocial song would report greater positive affect than those who listen to the neutral song. Additionally, it was hypothesized that those who listen to the prosocial song would report greater prosocial intentions than those who listen to the neutral song. This study used a between-subjects research design where participants were randomly assigned to listen to a prosocial (experimental condition) or a neutral (control condition) song. Participants listened to their assigned song, then reported their affect, performed a manipulation check, and, finally, were assessed on their prosocial intentions. Neither hypothesis was supported, but an interaction revealed that the neutral condition had higher positive affect ratings than the prosocial condition. Also, the mean scores of prosocial intentions revealed that those in the neutral condition had greater prosocial intentions than those in the prosocial condition.