Examining factors that protect against the negative repercussions of stress on everyday functioning is paramount. This experimental study investigated the effects of music listening and personality on the reduction of perceived stress and cognitive performance. Seventy adults (18–45 years, M = 22.8, SD = 6.6) completed measures of the Dark Triad traits (psychopathy, narcissism, and Machiavellianism), music preferences, and music uses, and undertook a stress-inducing procedure. Participants were randomly allocated to three groups: hip-hop/rap, classical music, control, being exposed to the respective genre or silence for 20 min after the predicted peak in stress. Results showed that classical and hip-hop/rap music equally facilitated stress reduction. Narcissism predicted lower stress when classical music preference was high. Narcissism also predicted enhanced performance but also greater stress, when paired with infrequent stress-management through music. These novel findings demonstrate how particular genres and traits, despite being predominantly negatively perceived, can enhance stress reduction or cognitive performance.