section_path: Liturgy/Church services/Music and chanting
section_name: Music and chanting
paragraph_text: Music and chanting
  
  The church has developed eight modes or tones (see Octoechos) within which a chant may be set, depending on the time of year, feast day, or other considerations of the Typikon. There are numerous versions and styles that are traditional and acceptable and these vary a great deal between cultures.