Tonality is a musical system that arranges pitches or chords to induce a hierarchy of perceived relations, stabilities, and attractions. The pitch or triadic chord with the greatest stability is called the tonic. The most common use of the term ..."is to designate the arrangement of musical phenomena around a referential tonic in European music from about 1600 to about 1910" . Modern classical (academical) music may practice or avoid any sort of tonality—but harmony in popular music remains tonal in some sense, and harmony in jazz music includes many, if not all, tonal characteristics, while having different properties from common-practice classical music.