The COVID-19 pandemic has had ramifications the world over, affecting many aspects of life, including mental health and music therapy practices. Due to the recency of COVID-19, there have been few studies exploring its influence on music therapy practice. This study aimed to explore the experiences of three music therapists based in the UK working in adult mental health settings during this period, to provide an in depth understanding of how both they and their practice have been affected. Interpretative phenomenological analysis (IPA) served as the methodology for this study, underpinning the method. Three music therapists participated in semi-structured interviews. Through data analysis, six common themes were identified: “Music therapists experienced initial impacts on their own mental health”, “Music therapists are adaptable”, “Online music therapy is meaningful”, “There may be barriers to online provision for service users”, “Feelings differ between music therapists about adopting extra work” and “Music therapy is more relevant now than ever”. These themes depict various challenges and opportunities experienced by music therapists, which may have implications for music therapy practice during this pandemic, practice in general, and in the event of future pandemics. With increased mental health challenges in the adult population, music therapy provision in adult mental health settings can play a crucial role.