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Gradus — Counterpoint Preview

Write Counterpoint Like Mozart

In 1786, a 30-year-old Wolfgang Amadeus Mozart sat down with his English student Thomas Attwood and began drilling him on species counterpoint — the same exercises Johann Joseph Fux codified in 1725. Below is one of Fux’s original cantus firmi. Place a note above each one that forms a consonant interval.

Choose a cantus firmus:
Fux CF 1 - Do ascending · Mode: C Dorian/Major · Source: Gradus ad Parnassum

Click a beat position below to select it, then choose a note from the keyboard.

Why First Species?

First species (note-against-note) is the most fundamental exercise in Western music education. Every interval must be a consonance: a unison, third, fifth, sixth, or octave. No dissonances allowed.

Gradus progresses through all five species — from this simple note-against-note to florid counterpoint with passing tones, suspensions, and free mixture — following the exact sequence Fux taught and Mozart learned.

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