Block Chords Piano: the George Shearing Technique

Put on September in the Rain, recorded by the George Shearing Quintet in 1949. Listen to the piano. It is no longer a struck-string instrument, it is a full horn section gliding under the melody. Every note of the tune is dressed, thickened, carried by a block of sound that moves with it. That is block chords, also called locked hands on piano. The technique that turns a bare melody into an orchestral arrangement without changing a single note of the tune.

Plenty of pianists get stuck on this for years. They know it exists, they hear that it is beautiful, but they cannot see the mechanism. And yet the recipe fits in one sentence. We are going to take it apart, then lay out the exercises that get it into the fingers.

What are block chords in jazz piano?

A block chord is a melody harmonized across five voices, with the tune's note doubled at the octave and three chord tones stacked in the middle. The right hand plays four tight notes with the melody on top. The left hand takes that same melody note, one octave lower. Because both hands move together, in the same direction, to an observer they look locked to each other. Hence the nickname: locked hands.

You will also run into the terms four-way close (the four-voice chord in close position) and double melody. They all name the same idea. The melody never sounds alone: it is carried in octaves, the center filled with harmony. The piano stops being a linear instrument and becomes a small wind orchestra.

The big difference with drop 2 voicings comes down to exactly that doubling. Drop 2 opens the chord by dropping an inner voice down an octave. The block chord keeps everything tight and doubles the melody. Two opposite aesthetics: one breathes and leaves room for the bassist, the other fills the space and sings at full voice.

Who invented block chords, and why?

Inventing the style at the keyboard falls to Milt Buckner, pianist and organist in Lionel Hampton's band in the 1940s. He was the one who transposed a big-band arranging logic onto the piano: harmonizing every note of the tune the way a saxophone section would on the chart.

But the name that stuck in history is George Shearing. A blind English pianist living in New York, he formed a quintet in 1949 and broke through with a cover of September in the Rain, written by Harry Warren. His piano, doubled by the vibraphone and guitar playing the same line, created an instantly recognizable color. People have talked about the Shearing style ever since. The thing followed him his whole career.

Others were already using it, in other forms: Phil Moore, and even Duke Ellington or Count Basie in their section arrangements. Later, Red Garland made it his signature in the Miles Davis trio, Phineas Newborn pushed it to a dazzling velocity, and Bill Evans used it to harmonize entire ballads. The block chord is not a dated curiosity, then. It is a living tool that runs across seventy years of piano.

How to build a block chord step by step

Let us take a C6 (C, E, G, A) with a melody on the E. Here is the procedure, in order, without skipping anything.

Step 1. Place the melody at the top of the right hand: the high E.

Step 2. Below that E, stack the other chord tones going down, as tight as possible: C, A, G. The right hand then holds G, A, C, E, four notes within the span of an octave. That is the four-way close.

Step 3. The left hand doubles the melody an octave below the top E. It plays that low E, alone.

Result from bottom to top: E (left hand), G, A, C, E (melody). Five sounds, the melody in octaves, three notes in the center. The block is complete. When the melody climbs to the G, the whole block moves up a notch, hands locked. When it drops to the C, everything drops. You stop thinking in isolated chords and start thinking in one shape that slides along the tune.

Melody (top)	Right hand (four-way close)	Left hand (octave)
C	E, G, A, C	C
E	G, A, C, E	E
G	A, C, E, G	G
A	C, E, G, A	A

Notice the regularity: you simply rotate the inversions of the chord so the melody always stays on top. That is the whole point. Once the starting position is found, the rest follows by displacement.

The passing diminished chord: the secret of the Shearing style

Here is the step nobody explains to you, and it is the one that makes all the difference between a textbook block chord and real Shearing phrasing. A melody does not stay on chord tones. It passes through foreign notes, passing tones. What do you do when the melody lands on a D, which does not belong to C6?

You harmonize it with a diminished chord. Barry Harris's rule, who theorized all of this: on chord tones, use the chord; on passing tones, use a diminished seventh chord. That passing diminished smoothly connects two stable harmonizations. The ear hears a fluid line, never a gap.

Concretely, over a descending C major scale harmonized in block chords, you alternate: C (C6), B (diminished), A (inverted C6), G (inverted C6), F (diminished), E (C6), D (diminished), C (C6). Play that slowly, hands locked, and you immediately hear the sound of the Shearing and Red Garland records. It is almost magic. And it is only a scale.

How to practice block chords without getting discouraged

The technique is demanding for the right hand, which has to hold four tight notes and move them fast. Here is a realistic practice plan spread over a few weeks.

Week 1. Harmonize a major scale up and down in block chords over a single chord (C6), no passing diminished for now. Hands separate first, then together. Free tempo, eyes closed every other time to anchor the kinesthetic memory.

Week 2. Add the passing diminished chord on the foreign notes. Same scale, but this time every non-chord note is dressed with a diminished. Slowly. The goal is not speed, it is for the hand to find the inversions without calculating.

Week 3. Take a simple tune you know by heart. Autumn Leaves, Misty, or even a nursery rhyme. Harmonize the whole melody in locked hands. Now the concept becomes musical, not just technical.

Week 4. Transpose into two or three other keys. Work on the passages where the right hand has to cross a large distance. That is where most people quit: hold on, it is exactly the moment it clicks.

Twenty minutes a day, no more, but every day. Deliberate, slow practice beats an hour of aimless noodling ten times over.

Block chords or drop 2: which to choose and when?

Both techniques coexist in the playing of the great pianists, but they do not serve the same purpose. The block chord fills the space. It sings loud, dense, orchestral. Perfect in solo piano, on an exposed melody, on a finale you want thick. Bill Evans used it for his most lyrical moments.

Drop 2, on the other hand, clears the midrange and leaves air. Ideal in a trio with double bass, comping behind a soloist, when you must not cover the others' harmonic space. The choice is made by ear and by context. A good pianist moves from one to the other within the same tune.

To connect your blocks cleanly from one chord to the next, the principles of voice leading on piano still apply. Locked hands is even an extreme case of voice leading: every voice moves the minimum, together. And if you want the other end of the spectrum, where the left hand frees up completely, look into rootless voicings. Between the dense block and the lightened chord, you have the whole palette of harmonic jazz piano.

The block chord intimidates on first listen. By the fiftieth repetition, it becomes a reflex. That day, you tackle any tune and it comes out in relief, as if arranged for an orchestra you hold in two hands. To go deeper into the grandfather of all these techniques, the Block chord article on Wikipedia traces the full history of the device. Happy practicing.