Listen to the whole journey
- Eb
- Cm
- Fm
- Bb7
- Eb
How the tension moves
Phase 1 • Diatonic Tonic
The Home (Tonic — Degree I)
EbTonal rest function (Riemann, 1893): Acts as the acoustic gravitational center and tonal anchor. All notes of the diatonic scale find stability in this chord. Playing Eb establishes the consonant foundation of the key — generating neither tension nor urgency of movement.
Listen
- Eb
Phase 2 • Subdominant and Relative
The Landscape (Subdominant — Degrees vi and ii)
CmDiatonic voice leading (Schoenberg, 1911): Transitioning to Cm introduces the first harmonic departure from the tonic. By sharing common tones with the opening chord, voice leading across the neck remains smooth and organic. It provides a warm, introspective minor texture before driving the progression toward the dominant.
Listen
- Eb
- Cm
Phase 3 • Dominant with Tritone
The Adventure (Dominant — Degree V7)
Fm → Bb7Instability and harmonic pull (Rameau, 1722): The dominant chord Bb7 harbors the leading tone and the diatonic tritone interval. This internal dissonance produces the peak acoustic tension of the progression, and the ear waits for the return home.
Listen
- Fm
- Bb7
Phase 4 • Authentic Cadence
The Return (Cadential Resolution)
EbRelease and resolution of tension: The descending fifth bass movement (Bb7 to Eb) instantly dissolves all accumulated harmonic tension. The tritone resolves contrary-motion into the third and root of Eb, completing the cycle with total acoustic balance.
Listen
- Bb7
- Eb
Check it with your ear
Two short questions to solidify what you've just read. There's no grade or record, so if you get it wrong, you can listen again and try again.
Which chord creates the tension that asks to return to Eb?
Listen to both endings. Which one sounds finished?
Try it on your guitar
Play and stay there for four beats without moving. Then play . That relief you feel is the resolution this lesson talks about. Repeat it three times and then try the whole circle at 85 BPM.
Inside the key of Eb major
Eb major is built from Eb, F, G, Ab, Bb, C and D. It has three flats, Eb, Ab and Bb.
C minor uses the same seven notes, which makes it the relative minor. Compared with Ab major, only one note changes, D becomes Db. Compared with Bb major, only one note changes, Ab becomes A.
In Bb7, the third D and the seventh Ab sit six semitones apart, a tritone. In the guitar shape of Bb7, D sounds on string 2, fret 3 and Ab on string 3, fret 1.
With a capo it also works with other shapes. You can play it with the D shape and the capo at fret 1 or with the C shape and the capo at fret 3 or with the A shape and the capo at fret 6.
Theoretical Foundations
Hear and practise this circle in context
The bass line and the tonal centre
Play Eb alone, then play the four chords in order: Eb – Cm – Fm – Bb7.
Tonic, preparation and dominant
Apply that map to Eb – Cm – Fm – Bb7 rather than assuming that the same chord must play the same role in every song. Name the starting chord Eb aloud; then pause after Cm and ask which note you still hear as home. Repeat after Fm and after Bb7.
When the dominant contains a tritone
In this circle, Bb7 is a dominant seventh chord: the “7” in its symbol marks the added seventh. Its third and seventh form a tritone, an interval of three whole tones that creates tension toward Eb. Play Bb7 → Eb below and follow those two inner voices: the third rises by a semitone toward the tonic, while the seventh descends by step to a note in the tonic chord.
Listen
- Bb7
- Eb
Common tones and economical fingering
Move from Eb to Cm slowly and listen for a pitch that can remain still; if there is none, listen for voices that move by the smallest intervals. Repeat with Cm to Fm, Fm to Bb7, and the return to Eb.
A measured practice routine
First play Eb – Cm – Fm – Bb7 with one downstroke at the beginning of each measure.
Transpose without changing the functions
Compare the two versions by singing the first note of Eb and then the first note of its counterpart in the new key.