This article presents a theory explaining how young adults living with Williams syndrome (WS) learn life skills through music. The article answers the question: What theory explains how young adults living with WS learn life skills through music? The theory presented in this article is informed by principles of care ethics and compassionate music education and theories of wellbeing and flourishing. The theory is further informed by empirical data, including data collected during semi-structured interviews, casual conversations, observations, field notes, and social media and blog posts collected at Berkshire Hills Music Academy, Massachusetts, USA, over six weeks. Thematic analysis was the data analysis strategy. The theoretical proposition represented by the findings is: (i) If young adults living with WS have the opportunity to learn through engagement in music activities within a safe environment in which they are engaged, supported, appreciated, motivated, feel that they belong and feel that they are competent, and (ii) if educators are willing to focus on the abilities of these young adults by putting their needs first, (iii) then young adults living with WS should be able to overcome various challenges and ultimately develop the life skills they need to live well.