The purpose of this study was to investigate the reliability and validity of using a motivation inventory with music students in upper-elementary, middle, and high school. We used the middle/high school version of the MUSIC Model of Academic Motivation Inventory to survey 93 students in the 5th to 12th grades in one school. Our analysis revealed the inventory produced reliable and valid scores on the five MUSIC scales (MUSIC is an acronym for empowerment, usefulness, success, interest, and caring). Findings provide empirical evidence to support the validity of the five-factor structure of the MUSIC Model of Motivation for music students. Thus, the inventory may be used by music teachers as a reliable means to assess students' motivation-related perceptions. We provide several strategies that music teachers can consider in designing instruction to be consistent with each component of the MUSIC model, as well as possible implications.