School-based bullying is a serious issue facing adolescents within the United States and relational bullying and victimization behaviors within music ensemble classrooms have become a topic of inquiry among music education researchers. Using data from a convenience sample of high school youth enrolled in an instrumental music program, we examined the ensemble-level effects on self-reported frequency of relational victimization and perceptions of their willingness to intervene. Results indicated that a youth's self-reported willingness to intervene in bullying episodes varies among instrumental music ensembles. Moreover, self-reported willingness to intervene predicted a significant amount of variance in relational victimization scores. The current study suggests that instrumental music ensembles may differ in terms of their prevalence of relational victimization experiences and how youth are willing to intervene in these bullying episodes.