The Alfred Theory for Busy Teens, Book 1 course book is designed for teens that want to further develop their skills in music theory but have limited time to study it. It includes eight units devoted to the following subject areas--rhythm, intervals, natural minor scales, minor key signatures, musical terms and symbols, augmented triads, naming triads and inversions, and i-iv-V7-i chord progressions in minor keys. Each unit contains a succinct introduction to the subject matter, short drills for five days of the week and extra credit examples with further challenges.