This includes learning how to properly use your voice, develop your vocal range, and improve your tone and technique. Seek out a qualified vocal coach who has experience in teaching classical singing. 2. Learn music theory: In addition to vocal training, it is important to have a solid understanding of music theory. This includes learning about musical notation, rhythm, harmony, and other musical concepts that are essential for a classical singer. 3. Study classical repertoire: As a classical singer, you will be expected to perform a wide range of classical repertoire from various time periods and languages.