The lockdown imposed in Spain as a result of COVID-19 made it necessary to rethink educational processes. In this situation, digital technologies offered the most efficient solution by moving all teaching to an online format. The purpose of this study is to analyze the adaptations made in music schools and conservatories. To achieve this, an ad hoc questionnaire was designed and distributed, and resulted in a sample of 259 teachers. The results reveal a lack of training and structures that was reflected in the problems encountered by teachers with continuing instrumental classes, especially for ensembles. However, music theory classes were affected to a lesser extent. It was observed that musical performance was used to focus on the emotional aspects of students and their families.