What is the characteristic of the playing style described by 'bisbigliando'?

The term 'bisbigliando' refers to a specific playing technique primarily used by string instruments, particularly the cello and violin. This technique involves producing a sound that is quick and soft, creating a whispering or fluttering quality. The hallmark of bisbigliando is that it features rapid alternation between two notes or more, executed with a light bow stroke.

This results in a shimmering effect, which is characterized by swift, repeated notes that create an ethereal atmosphere. This contrasts significantly with other styles that may emphasize more sustained notes or strong accents. Recognizing the delicate and fleeting nature of bisbigliando helps clarify why it is associated with a quick and repeated style rather than sustained legato or other characteristics that might suggest a different expressive quality.