Eight-note span in music (6)

I believe the answer is:

octave

(Other definitions for octave that I've seen before include "Musical interval doubling note frequency" , "Series of eight notes on a scale" , "Twelve semitones" , "Interval of 12 semitones" , "Interval involving a doubling of frequency" .)

I've seen this clue in the Newsday.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.