What does the term 'bisbigliando' indicate in a musical score?

The term 'bisbigliando' refers to a technique typically used in string playing, particularly with the violin and other bowed instruments. It indicates that the player should perform a series of repeated notes quickly and softly by using the fingers, often creating a delicate, shimmering sound. This technique often involves the use of a light touch and a rapid alternation between the notes, which contributes to its characteristic ethereal quality.

The other options represent different musical concepts that do not align with the meaning of 'bisbigliando.' For example, emphasizing the first beat of a measure pertains to articulation and accentuation rather than the finger technique described. Gradually increasing tempo is related to tempo changes, which is unrelated to the specific technique of bisbigliando. Similarly, playing with a heavy bow stroke describes a style of playing that contrasts with the gentle and light nature of bisbigliando. Understanding these distinctions enriches one's ability to interpret musical scores accurately.