Recording, musicalTác giả : Barton Press (2020)
21-day course: Discover a comprehensive guide conceptually divided into three weeks and twenty-one days. Graspable concepts: Learn through a conceptual guide where each week focuses on an overall topic, and each day focuses on a subject to analyze and practice. Step-by-step exercises: Discover daily exercises included in the guide so you can apply and practice knowledge as you gain it. 
