Vocal Essentials for the Pop Singer Book & CD. Great singers have a combination of skills that, from the outside, look like natural talent. In truth, these skills are a combination of talent, training, and experience.Topics inc, Posture and breathing,Vocal resonance and projection, Ear training, Working with microphones,Vocal health and maintenance, Music theory basics, CD includes a terrific set of warm up exercises for daily use,as well as vocal and musical examples of the concepts presented.