Related Clues:
- Song part repeated after each verse
- Agreement reached by peacekeepers operating around island
- Singers start to chant name of ancient god
- One needs all players directed to the same pitch
- Greek tragedians first to celebrate sun-god
- Concord; a trade union
- Some chanting about Egyptian god
- Wrongly-spelt noun one's found in agreement
- Concord; with same pitch
- There's agreement to raise son in more than one marriage
- Agreement, inconclusive one, with offspring
- A coincidence of musical notes
- Succeeded in joining concert
- Exact vocal harmony
- Simultaneous action