Contrapunctus vs Teoria

Contrapunctus is a free web platform for music theory, composition, and counterpoint study. Its real-time editor shows Roman-numeral and chord analysis while users write, and identifies part-writing errors and non-chord tones. Compositions can use multiple voices, major, minor, or modal contexts, and sampled-instrument playback. The platform includes an interactive edition of Fux’s Gradus ad Parnassum, with species-counterpoint lessons, an AI tutor, and English and Latin text. Community members can create and solve exercises, share solutions, vote, and earn points toward a 15-rank ladder. Educators can create classes, assign lessons, review submissions, and track scores and class averages in a gradebook. Accounts use email or Google, with projects and activity synchronized across devices. Plain and compressed MusicXML can be imported, but MusicXML or MIDI export is not yet shipped. Some imported details may be simplified or dropped, and tutor free-form questions are limited to 25 per account per rolling hour.

Teoria.com is a free resource for studying music theory and practicing aural skills. Tutorials and reference material cover reading music, intervals, scales, chords, harmonic functions, and musical forms, with exercises for practice. Ear-training activities include melodic dictation, key and note recognition, and identifying harmonic progressions. Most exercises can accept answers from a MIDI keyboard in supported browser versions of Chrome, Edge, Firefox, and Opera. The HTML5 and JavaScript exercises are described as compatible with tablets and mobile devices subject to browser requirements, and access is listed for Android, iOS, and the web. Signing in is optional. Signed-in users can save scores, review activity, and download filtered records as PDF or TSV files, although older saved data may be deleted. Exercise links can be shared through email, webpages, Moodle, Blackboard, or social media. Content is available in English and eight additional languages.