What is rendered
The renderer separates a symbol into root, quality, extensions, and an optional slash bass. It spells the required chord tones, chooses a readable register, and places them at one onset. Whole notes make pitch names easy to inspect; they do not claim that the chord lasts four beats in your music.
Two worked examples
- C7 produces C, E, G, and B♭. The B♭ distinguishes the dominant seventh from Cmaj7, which uses B natural.
- C/E requests E in the bass. One compact display is E3, C4, G4. Those pitches still form C major, while E is the lowest sounding note.
A checking sequence
Read the symbol and predict the letters before viewing the staff. Check that a triad uses alternating letter names, then verify accidentals and seventh quality. For a slash chord, inspect the lowest note separately. This makes the renderer an answer check instead of a replacement for chord spelling. Play the stack slowly and compare one changed note between related qualities.
Limits
Chord symbols do not fully specify rhythm, register, doubling, hand assignment, inversion beyond a stated bass, or voice leading. The renderer therefore shows one clear pitch stack rather than pretending to produce a finished score. Altered or unusually notated symbols may require manual interpretation. Compare the display with the key, melody, and neighbouring harmony.
| Symbol | Pitch set | Difference |
|---|---|---|
| C | C E G | major triad |
| Cm | C E♭ G | lowered third |
| C7 | C E G B♭ | minor seventh above root |
| Cmaj7 | C E G B | major seventh above root |
Sources
- Open Music Theory: Triads — Reference for triad spelling.
- Open Music Theory: Seventh Chords — Reference for seventh-chord terminology.