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Belcanto singing is characterized by a focus on perfect evenness throughout the voice, skillful legato, a light upper register, tremendous agility and flexibility, and a certain lyric, "sweet" timbre.
Emphasizing technique over volume, belcanto style has famously been linked to an exercise said to demonstrate its epitome, where a singer holds a lit candle to her mouth and sings without causing the flame to flicker.
While the belcanto period is typically dated to the early 19th century, the term itself did not come to be commonly used in its current sense until the middle of the 19th century.