Although flow theory is one way of measuring the quality of a student's experience in a music ensemble, the majority of flow research utilizes samples of high school or collegiate level musicians thus causing us to generalize findings to young adolescent (middle school) populations. Using a convergent parallel mixed methods design, the purpose of this study was to examine factors that may contribute to flow experiences of students in a middle school band. Quantitative data (surveys that included the Experience Sampling Method) and qualitative data (case study of an eighth grade band) were analyzed separately before being merged into a final analysis. Results provide evidence to support that flow is an individualized experience even though students were not in flow based on self-perceived ratings of challenge and skill. Mixed methods results also suggest that young adolescent students may not conceptualize flow in the same manner as older adolescents, thus erroneously suggesting that flow did not occur. Recommendations for future research include exploring alternative vocabulary for flow characteristics for use in Experience Sampling Method surveys, expanding the sample to include music programs at multiple middle schools to create additional regression model predictor variables, and longitudinal explorations of flow over time within large ensembles.