Build it, change a member
Construct four triad qualities and two sus chords. Then compare each with a major triad on the same root and hear the member that changes.
Every key is available. Click or tap to select or remove a note. Arrow keys move; Enter or Space toggles. On a phone, swipe to reach higher keys.
Optional hint · counts as assisted practice
About this practice
Six constructions cover major, minor, diminished, augmented, sus2, and sus4. Roots are limited to C, D, F, G, and A. This checks exact sounding pitches in the stated voicing, not spelling, emotional character, or a need to resolve. Sus2 and sus4 replace the third; neither is required to move onward.
Keyboard labels use sharps. The authored chord spelling appears in feedback and on the staff: a white F key can sound E♯ in an A augmented triad. Piano: Splendid Grand, the Common Tone’s approved quiet layer.