Music Theory for the 21st-Century Classroom

Covers rhythm, pitch, scales, chords, and harmonic progression in a structured college-level format. Includes exercises and musical examples throughout.

Mark Andrew Cook

Covers notation, scales, key signatures, intervals, chords, and harmonic analysis. Published by the University of Edinburgh as an open educational resource (CC BY-SA 4.0).

Michael Edwards, John Kitchen, Nikki Moran, Zack Moir and Richard Worth

Explains notation, pitch, time signatures, keys, scales, intervals, chords, and transposition with clear examples and exercises. An open textbook from Connexions (CC-SA 4.0).

Catherine Schmidt-Jones

Teaches notation basics, key signatures, scales, rhythm, intervals, and triads with quizzes at the end of each section. Published by MacEwan University in 2024 (CC BY-NC 4.0).

Devin Hart

Focuses on musical modes, improvisation techniques, composition with modes, and modulation between keys. Practical examples for applying advanced theory concepts.

Beverly Hills High School