The recent COVID-19 health emergency has forced many music teachers to adopt remote teaching methods. The present paper investigates the practices and strategies used by conservatory-level music teachers to give lessons online in different European countries and the USA. Data from an exploratory qualitative study were collected using semi-structured interviews covering aspects such as curriculum design, lesson implementation, evaluation, examination organization, and time management skills. Interviewees offered rich descriptions of their experiences of teaching both music theory and instrumental lessons. Findings were analyzed using an inductive method, giving rise to the following categories: COVID-19 and the music school, technology, curriculum planning, managing instrumental lessons, examinations, strengths, and limitations. Participants discussed their ability to manage technology, and they employed skills such as flexibility, problem solving, and creativity in their curriculum planning and in using a variety of remote learning tools. They revised curricular activities and online teaching strategies and methods were associated with the musical instruments played. They argued that online teaching was very time consuming (e.g., planning activities, preparing materials, and exploring the new possibilities of technical tools) and that it was stressful to have lost a satisfactory work-life balance. They reported becoming more organized in the management of their activities. Internet platforms were found useful for sharing material, communicating, exchanging messages, and keeping records of all the work done. Participants learnt to use video clips systematically for modelling and teaching. They were aware of the strengths and limitations of e-learning, and they called for more institutional support and opportunities for professional development.