James Jordan has been at the forefront of choral pedagogy for over 35 years. His landmark publications under the guidance of Frauke Haasemann have afforded him a front row seat to the development of choral warm-up pedagogy. His studies in the psychology of music with Edwin Gordon have allowed him to marry the pedagogy of the choral warm-up with music learning theory. His text, The Choral Warm-Up, shared the pedagogical method for building healthy choral sound with teachers around the world. This book shares the exercises that have been at the core of vocal pedagogy for the choirs at Westminster Choir College: the Chapel Choir; the Schola Cantorum; Westminster Williamson Voices; the Symphonic Choir; and Westminster Choir as well as his professional ensemble, The Same Stream. The revolutionary sequence of the efficient exercises in this book, while they appear simple, fold voice science and music learning theory into the choral warm-up by refocusing choral ensemble warm-up pedagogy on tongue position and the inner architecture of vowels. Using only the triadic 1-3-5 provides a consistent pedagogy for vocal health for every ensemble, creating beautiful choral blend, accurate intonation, and a humanly centered sound for choirs at all levels.