American Choral Directors Association (ACDA) was formed in Kansas City, Missouri, on February 24, 1959, by 35 choral directors from around the United States. They aimed to create an organization that would meet the professional needs of all choir directors. To achieve this goal, they made the promotion of excellence in choral music through performance, composition, publication, research, and teaching their central purpose. In addition, ACDA strives through arts advocacy to elevate choral music's position in American society. From the original steering committee to today's leaders, this central purpose continues to drive ACDA's development. Among the ways that ACDA has promoted excellence in choral music are national and division conventions featuring the best choirs in the world, awards given to individuals who have in some way contributed to the art of choral music, state workshops and clinics, and honor choirs and commissioned works. Each generation that has passed through ACDA has left its indelible mark. The first generation built the foundation and gave ACDA its purpose. The second generation gave ACDA its independence and voice. The third generation leads the organization into a new and more globally connected world. And through it all, ACDA remains true to promoting choral music excellence.

In 1946, Harry Choates, a Cajun fiddle virtuoso, changed the course of American musical history when his recording of the so-called Cajun national anthem "Jole Blon" reached number four on the national Billboard charts. Cajun music became part of the American consciousness for the first time thanks to the unprecedented success of this issue, as the French tune crossed cultural, ethnic, racial, and socio-economic boundaries. Country music stars Moon Mullican, Roy Acuff, Bob Wills, and Hank Snow rushed into the studio to record their own interpretations of the waltz-followed years later by Waylon Jennings and Bruce Springsteen. The cross-cultural musical legacy of this plaintive waltz also paved the way for Hank Williams Sr.'s Cajun-influenced hit "Jamabalaya."
Choates' "Jole Blon" represents the culmination of a centuries-old dialogue between the Cajun community and the rest of America. Joining into this dialogue is the most thoroughly researched and broadly conceived history of Cajun music yet published, Cajun Breakdown. Furthermore, the book examines the social and cultural roots of Cajun music's development through 1950 by raising broad questions about the ethnic experience in America and nature of indigenous American music. Since its inception, the Cajun community constantly refashioned influences from the American musical landscape despite the pressures of marginalization, denigration, and poverty. European and North American French songs, minstrel tunes, blues, jazz, hillbilly, Tin Pan Alley melodies, and western swing all became part of the Cajun musical equation. The idiom's synthetic nature suggests an extensive and intensive dialogue with popular culture, extinguishing the myth that Cajuns were an isolated folk group astray in the American South. Ryan Andre Brasseaux's work constitutes a bold and innovative exploration of a forgotten chapter in America's musical odyssey."

Discovering Music Theory is a suite of workbooks and corresponding answer books that offers all-round preparation for the updated ABRSM Music Theory exams from 2020, including the new online papers. This full-colour workbook will equip students of all ages with the skills, knowledge and understanding required for the ABRSM Grade 5 Music Theory exam. Written to make theory engaging and relevant to developing musicians of all ages, it offers: - straightforward explanations of all new concepts - progressive exercises to build skills and understanding, step by step - challenge questions to extend learning and develop music-writing skills - helpful tips for how to approach specific exercises - ideas for linking theory to music listening, performing and instrumental/singing lessons - clear signposting and progress reviews throughout - a sample practice exam paper showing you what to expect in the new style of exams from 2020 As well as fully supporting the ABRSM theory syllabus, Discovering Music Theory provides an excellent resource for anyone wishing to develop their music literacy skills, including GCSE and A-Level candidates, and adult learners.

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

What link might connect two far worlds like quantum theory and music? There is something universal in the mathematical formalism of quantum theory that goes beyond the limits of its traditional physical applications. We are now beginning to understand how some mysterious quantum concepts, like superposition and entanglement, can be used as a semantic resource.