The note bursts forth with an immediately vibrant, effervescent zest, far more complex and multifaceted than a simple lemon or lime. It possesses the brightness of a lemon, yet with an underlying sweetness and a distinctive, almost floral-green bitterness that sets it apart from traditional citrus. Imagine the initial sharp tang of green mandarin, quickly softened by a delicate, almost waxy floral nuance, reminiscent of neroli blossoms but without their heavy indolic character. It is incredibly juicy and radiant, with a clean, almost sparkling clarity. Its texture is crisp and airy, lending a shimmering quality to a composition. As a definitive top note, its projection is excellent initially, a lively flash, but its longevity, like most true citruses, is relatively fleeting, evolving into a softer, slightly peppery warmth before gracefully receding.