The Science and Art of Singing – An In-Depth Approach to Classical Vocals (Hardcover) ; “Khoa hoc va nghe thuat ca hat - Mot cach tiep can chuyen sau ve thanh nhac co đien” la cuon sach tap trung gioi thieu nhung ky thuat thanh nhac nen tang, nhung nguyen tac cot loi co the ung dung trong hau het cac phong cach ca hat. ; "The Science and Art of Singing - An In-Depth Approach to Classical Vocals" is a book that focuses on introducing basic vocal techniques and core principles that can be applied in almost all singing styles.