Musical term (6)
(Other definitions for octave that I've seen before include "A fence standing" , "Series of eight notes in music" , "Doh to doh" , "Interval involving a doubling of frequency" , "A verse of eight lines" .)
(Other definitions for coda that I've seen before include "Closing passage of musical piece" , "Musical finale" , "Final movement" , "Concluding passage of piece of music" , "Concluding section" .)