1. Separate repetition from travel
Purpose: place and move octave shapes without combining every difficulty at once. Chapter 17 introduced stepwise octave fragments. Here the new task is a change of position with a planned release and landing.
Learn one hand at a time. RH uses 1–5 and LH 5–1 for this all-white-key study. The lowest notes start on RH C4 and LH C2, two octaves apart, so the hands’ octave shapes do not share a key. Combine them only after each route is secure.
The first leap is a fifth, the next a fourth, and the return a full octave. Name the destination before moving. Use the written rest to release and travel, then arrive with both notes together. Do not hold the old span while reaching toward the new one.
Prepare the landing before adding speed
Play only the lower notes through the route, then only the upper notes. Restore the octave pairs at the same slow pulse. If the two notes do not land together, practice just that destination quietly before reconnecting the leap.
If an octave is not comfortably available, retain the single-note route. More force or a wider fixed stretch does not solve an unavailable span.
Checkpoint: the return to the starting C is as deliberate as the ascent, the rests remain audible, and the hand is free to move after each attack.
2. Shape an octave line
Hear one melody, supported by its doubling
Play the RH upper line alone and decide how it should rise and settle. Add the lower octave note more quietly. Then compare a balanced octave sound. Choose the balance for the musical phrase rather than assuming both notes always need equal prominence.
For LH, begin by listening to the bass line clearly. Add the upper octave note without making the total sound dominate the other hand. Register matters: a low octave can supply ample weight without a heavy attack.
Introduce short repetitions
On one comfortable C octave, play two quiet quarter-note attacks and rest for two beats. Let the keys return enough for the second attack. Expand to four attacks only if the release remains easy; do not combine extra repetitions with a faster tempo in the same attempt.
Now place that two-attack group before one leap from the previous page. Rehearse the last repeated octave and the landing separately. The release that prepares the leap belongs to the rhythm; it should not add an uncounted hesitation.
Choose articulation in context
A connected-sounding octave phrase may involve small releases and appropriate pedal rather than finger legato between every shape. Black-key passages may benefit from a different outer finger for some hands, but that choice must fit the actual route. Do not force 1–4 simply because it is presented as a more advanced option.
Return to the stepwise octave scale only when its particular movement is useful. Repeating every octave exercise in every session is less informative than identifying whether the current difficulty is attack, repetition, distance, or balance.
Checkpoint: the phrase remains recognizable when the doubling is added, and a position change does not produce an automatic accent or pause.