Commissioned by a religious house for the last office of the day, The Compline Bell was cast small and quiet on purpose. Compline is the hour of ending; the sisters asked for a bell that would carry across the cloister and no further, and the fourth founder — who normally measured success in miles of carry — obliged with the most restrained casting of his career.
She is the last of Vesper’s bells made before the science of tuning changed everything. Her tierce sits narrow, a fifth of a semitone shy of the true minor third, and her hum floats slightly sharp above its octave, so that her decay seems to rise even as it fades. The sisters are recorded as preferring the fault. A bell that ends the day, their abbess wrote to the foundry, should not sound entirely resolved; resolution is what the night is for.
Struck once at dusk for a century and a half, she has worn her soundbow so evenly that the hammer mark is a perfect circle. The register keeps her weight, her note, and one instruction carried forward from the original commission, never amended: one stroke only, and let it finish.