Sustaining or increasing participation in school choral programs is a priority among choral music educators. Motivation frameworks are helpful tools for understanding why students start, stop, or sustain involvement in activities. In this article, I explore some of the sociopsychological factors associated with choral music participation through the lens of two motivation frameworks: Self-determination theory (SDT) and Expectancy-value theory (EVT). First, I use SDT to highlight classroom characteristics that encourage intrinsic motivation and sustain long-term engagement in choir. Second, I explore how concepts from EVT are important to consider when designing a choral program and the associated recruiting strategies. Finally, I frame choral music participation as an inherently complex phenomenon--differences between enrollment rates and program characteristics are to be expected and welcomed, given the numerous ways motivational factors and school environments influence involvement. I briefly address each motivation theory followed by multiple classroom applications.