# Music Theory Print > Music theory concepts, composers, works, and genres — sourced from Wikipedia, not AI-written. ## Composers & Music History Composer biographies sourced from Wikipedia — 77 core composers dated and grouped by era, and a long tail of nearly 12,000 more. (11,988 composers, 77 dated & grouped by era: https://musictheoryprint.com/composers) ## Genres & Styles Music genres and styles from around the world, filterable by region and by family. (2,934 genres & styles, 12 regions, 13 families: https://musictheoryprint.com/genres) ## Legacy Library The original printable worksheet archive, at the same addresses it has always had. (9 channels, 1,078 worksheet topics, 107,800 sets: https://musictheoryprint.com/legacy-library) ## Notable Works Musical works with an article of their own, grouped under the composer who wrote them. (3,887 works, 73 composers: https://musictheoryprint.com/works) ## Practice Practice questions across intervals, key signatures, the circle of fifths, chords, and scales — 416 questions computed from real music theory, not written by AI. (23 pages: https://musictheoryprint.com/practice) ## Theory Concepts Core music theory concepts — intervals, scales, chords, notation, rhythm, and ear training. (111 pages: https://musictheoryprint.com/theory-concepts)