1. Quiet does not mean indistinct
The opening of Clair de lune, measures 1–2, asks for a sound that is soft yet present. The upper notes need a gentle outline, and the held harmony needs enough space to resonate without swallowing that outline. Start with the printed pp while learning the notes; color is part of the passage from the beginning.
Preparation: comfortable quiet chord attacks and control of one line within a pair. Count three dotted-quarter beats per bar. The opening eighth rest is part of the phrase, not an invitation to enter whenever convenient.
Find the line inside the pairs
Play the top notes of the RH alone, preserving the ties. Then add the lower notes more softly. In the first bar, the low F4–A♭4 pair coincides with the LH’s pair; let the hands share that register without competing for the same keys. You may let the LH sound those two pitches alone for this practice version.
At the start of measure 2, the tied RH D♭–F pair continues across the barline: do not re-strike it. The changing harmony below should be audible without an extra accent from above. B𝄫 in the LH sounds like A♮, but its spelling belongs to the written harmony.
Watch out · Soft pedal and sustaining pedal do different jobs
The source’s con sordina asks for a muted color; on a modern grand, explore the una-corda pedal. It does not mean holding the right pedal continuously. Compare the result on your own instrument.
Source: Keith OHara, Mutopia 1778, after E. Fromont (1905), public domain. Notes, durations, internal ties, pp and con sordina retained; cross-staff layout simplified and continuation beyond measure 2 omitted.
2. Choose resonance by listening
This original four-bar phrase separates balance from the more intricate opening of Debussy’s piece. Each bar has one clear harmony, making it easier to hear what the sustaining pedal adds and what it obscures.
Make three versions
Without pedal: connect the upper line as comfortably as you can. Accept a small gap where necessary rather than distorting the hand to hold every note. Keep both notes of each RH pair aligned at the attack.
With a clean change at each bar: play the new harmony, then release and depress the right pedal promptly to catch it. Listen through the change. A brief overlap can connect the sound; a slow release may leave the previous bass muddy.
With less pedal depth: where the instrument responds to it, experiment with a shallower depression. Compare the bass and the moving upper line. The useful depth depends on the piano and room, not on a universal fraction of the pedal’s travel.
Return to the opening
In Clair de lune, begin by clearing for the changed LH harmony at measure 2. Listen to the moving RH pairs within that harmony and adjust the pedal if their sound accumulates. This is a starting experiment, not an authoritative pedal edition; the short source excerpt prints no sustaining-pedal plan.
Listen closer · Resonance has a foreground
After playing a phrase, ask which note you could sing back. If the melody disappeared into an attractive cloud, lighten the accompaniment before adding more pedal.
Checkpoint: the upper line remains identifiable at pp, ties are sustained without extra attacks, and harmonic changes sound intentional. Record both dry and pedaled versions from a little distance. Keep the version that lets the phrase speak most clearly, not simply the one with the longest resonance.