A complete step-by-step guide, ^Secrets of Singing} provides everyt hing needed to gain technical and musical vocal mastery. Some of th e highlights include: Basic principles of singing, mastery of the u pper voice, achieving the power of an open throat, and phrasing and diction on a professional level. The package contains two CDs (one for high voice and one for low voice) and an almost 400-page infor mation-packed book.