In terms of range, which instrument would most resemble a soprano voice?

The violin most resembles a soprano voice in terms of range because it typically plays in the higher register, much like a soprano singer. The soprano voice is known for its light and bright qualities, often reaching higher pitches that are similar to the upper range of the violin. The violin can produce notes that align with the frequencies and expressive capabilities of a soprano, making it an ideal comparison within the string family.

The cello's range is lower and covers what is more akin to an alto or tenor voice, while the double bass operates in a much deeper register, comparable to a bass voice. The piano has a vast range but is less representative of any single vocal line, as it encompasses bass, tenor, alto, and soprano ranges all at once, making it less focused when drawing direct comparisons to a specific vocal type. Thus, the violin stands out as the best match for resembling a soprano voice.