Performers who have studied classical music extensively are said to be "classically trained". This training may be from private lessons from instrument or voice teachers or from completion of a formal program offered by a Conservatory, college or university, such as a B.mus. or M.mus. degree (which includes individual lessons from professors). In classical music, "...extensive formal music education and training, often to postgraduate [Master's degree] level" is required.
What have classical trained performers done extensively?
studied classical music