Tonic and Dominant

Identify the final chord in a major-key context.

Listen, compare, then practise

Listen to I–IV–V to establish the key, then identify the last chord: I (tonic) or V (dominant). A tonic closes the phrase.

A · Worked example

Tonic (I)

Sounding pitches: C4 · E4 · G4 · F4 · A4 · C5 · G4 · B4 · D5 · C4 · E4 · G4

Use the opening I–IV–V as a key reference. The last chord is the part to identify.

The key is C major. After I–IV–V, the last chord is Tonic (I).

B · Compare the difference

Dominant (V)

Sounding pitches: C4 · E4 · G4 · F4 · A4 · C5 · G4 · B4 · D5 · G4 · B4 · D5

Compare a final tonic with a final dominant after the same context. Listen back to the opening tonic if the reference fades.

The key is C major. After I–IV–V, the last chord is Dominant (V).

For aural examples, sounding pitch names are a listening reference. Written-note exercises preserve the displayed spelling.

Check the idea: The answer concerns the final chord’s role in this key.

1 · Guided practice

Locate the first chord in memory, then decide whether the final chord returns to it or repeats V.

2 · Independent practice

Identify the final function even as the key changes. Chord quality alone is insufficient because both candidates are major here.

3 · New-question check

Follow a fresh progression from its opening context instead of borrowing the home pitch of the previous one.

Each session starts with two guided questions, then your chosen practice set, followed by two new questions at a different tempo. First answers, same-question retries, and the final check have separate results.

Begin this lesson

Choose your practice

If this feels difficult

  • A major quality is mistaken for tonic function. Name quality separately, then restore the key context. Major or Minor Triad
  • The starting key is hard to retain. Follow a scale from and back to its tonic. Scale Color

Practice on paper or with a teacher

The teacher pack includes 10 fixed questions, replay controls, a student sheet, and a separate answer key. The printed key and downloaded JSON use the same questions.

Download an audio example

Original synthesized audio · A4 = 440 Hz · mono, 48 kHz WAV.

Download example WAV

Related skills

Musical background

These references explain the underlying definitions. The examples and practice sequences here are generated for Earstep.