Open Music Theory
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Free interactive theory and composition resources
More resources on Music Composition
Composing Music
Free guides and tools for composers
hooktheory.com
Hooktheory is an online music theory and composition platform offering interactive lessons, harmonic analysis of songs, and practical tools to build and analyze chord progressions and melodies.
Fundamentals of Musical Composition
Fundamentals of Musical Composition - A book resource
musictheory.net
MusicTheory.net offers free, concise music theory lessons and interactive exercises on topics like notes, intervals, scales, chords, rhythm, and harmony, plus ear-training tools and practice quizzes.
The Study of Orchestration
The Study of Orchestration - A book resource
composersnewpencil.com
Composers New Pencil is a practical blog and learning resource for music composition. It features tutorials, theory explanations, composition techniques, and workflow tips for aspiring and working composers.