Tool
The harmonic field of G major 1 sharp in the key signature. Click a degree to hear it, or hear the whole field.
Triads G I Tonic Diatonic A m ii Subdominant Diatonic B m iii Tonic Diatonic C IV Subdominant Diatonic D V Dominant Diatonic E m vi Tonic Diatonic F ♯ dim vii° Dominant Diatonic
Hear the field Degree Symbol Notes Function I G G · B · D Tonic ii A m A · C · E Subdominant iii B m B · D · F♯ Tonic IV C C · E · G Subdominant V D D · F♯ · A Dominant vi E m E · G · B Tonic vii° F ♯ dim F♯ · A · C Dominant
Seventh chords G maj7 Imaj7 Tonic Diatonic A m7 ii7 Subdominant Diatonic B m7 iii7 Tonic Diatonic C maj7 IVmaj7 Subdominant Diatonic D 7 V7 Dominant Diatonic E m7 vi7 Tonic Diatonic F ♯ m7 ♭5 viiø7 Dominant Diatonic
Hear the field Degree Symbol Notes Function Imaj7 G maj7 G · B · D · F♯ Tonic ii7 A m7 A · C · E · G Subdominant iii7 B m7 B · D · F♯ · A Tonic IVmaj7 C maj7 C · E · G · B Subdominant V7 D 7 D · F♯ · A · C Dominant vi7 E m7 E · G · B · D Tonic viiø7 F ♯ m7 ♭5 F♯ · A · C · E Dominant
The notes are spelled in octave 4, from G4. The function is assigned by degree — tonic on I, III and VI; subdominant on II and IV; dominant on V and VII — which is how the harmonic field is taught. Context can change that reading, and the tool reports the degree.
Related keys E minor Relative: the same key signature, in the other mode. G minor Parallel: the same tonic, in the other mode. G in the dictionary The tonic triad: notes, staff, keyboard and guitar shapes. Read about Diatonic harmony The chords that arise from stacking thirds on each degree of a scale, and why each quality lands where it does. Harmonic function The role each degree plays — tonic, subdominant, or dominant — and the tension that moves one to the next. Roman numeral analysis The notation that describes a chord by the position it occupies in the key rather than by the note it sits on. Minor key harmony The minor harmonic field, which is not one field: the three minor scales produce different chords on the same degree.