page_title: Ninth
hierarchical_section_title: Ninth
caption_attribution_description: English: Ninth chord Created with Sibelius
context_page_description: In music, a ninth is a compound interval consisting of an octave plus a second.
  Like the second, the interval of a ninth is classified as a dissonance in common practice tonality. Since a ninth is an octave larger than a second, its sonority level is considered less dense.
context_section_description: In music, a ninth is a compound interval consisting of an octave plus a second.
  Like the second, the interval of a ninth is classified as a dissonance in common practice tonality.  Since a ninth is an octave larger than a second, its sonority level is considered less dense.
caption: Cmaj9 chord (see chord symbols) About this soundPlay (help·info)