Orchestra auditions form a critical career challenge for many aspiring classical musicians. Hence, emerging professional musicians—defined as promising musicians entering the professional circuit without having yet established full-time employment—require effective practice and performance strategies to manage the demands of auditions. The purpose of this collective case study was to gain an in-depth and contextualized understanding of such practice and performance management strategies in relation to mock orchestra auditions. Data were collected using an intensive qualitative approach, combining semi-structured interviews with regular structured monitoring interviews, with eight musicians. Content analysis revealed that participants, on average, engaged in 33 hr of music-related activities per week, during which they adopted self-regulating strategies (i.e., strategic goal setting, structuring practice, monitoring practice, and reflecting on progress) to a varying degree. Furthermore, participants used different performance management strategies to cope with the pressure of auditions (i.e., practicing under pressure, imagery, relaxation, cognitive reframing, routines, attentional control, and substance use). Overall, the data suggest that the emerging musicians possessed several different practice and performance strategies but showed great variation in the use of such strategies and had a preference for long practice hours. Potential implications for music education organizations aiming to prepare students for auditions are discussed.