What are some of the key fundamentals of vocal technique that rappers need to master in order to sing effectively?

Some of the key fundamentals of vocal technique that rappers need to master in order to sing effectively include proper breathing technique, pitch accuracy, tone production, and control of vocal dynamics. They also need to develop good vocal habits, such as regular warm-up exercises, hydration, and proper posture. It's important for rappers to learn how to use their diaphragm effectively to support their singing, as well as how to project their voice and maintain a consistent vocal tone across different ranges. Developing the ability to control vibrato and infuse their singing with emotion and expressiveness can also help rappers to improve their overall vocal technique.