A good vocal coach will instruct you on diaphragmatic breathing, and on becoming aware of your body as you sing; keeping good posture; releasing tension etc. He or she will help you to identify your range, give you exercises to improve your technique, and guide you through the material you wish to sing. Finally, he or she will tell you to practice every single day!
Yet the question of commerce is also a factor, and Wu-Tang’s refusal to sell more than a single copy of the album bears a much stronger resemblance to the practices of creative commissioning and artistic production of the Renaissance. No distribution.