ABSTRACT
Compound intervals are intervals that are wider than an octave. You can take any simple interval and move the pitches apart by an octave to create a compound interval:
Seconds become ninths Thirds become tenths Fourths become elevenths Fifths become twelfths Sixths become thirteenths Sevenths become fourteenths
Compound intervals share the same scale degree content and other characteristics as their simple cousins.
