Teams will compete in men’s, women’s and mixed categories for chamber music, hymns and folklore. Children's and teenage competitions will be also staged.
The organisers will represent bronze, silver and golden diplomas to category winners.
The choir with a golden diploma and the highest score in each category becomes the Category Winner. Special Awards and a Conductor’s Award will also be awarded.
The opening ceremony will be taken place at Hoi An Theatre on May 15, while the major competitions will be held at Hoi An Beach Resort on May 16 and 17.
Choir teams will also join a public performance – the international melodies – at the rest-stop site on Bach Dang street, and Kazik Park on Tran Phu street from on May 16-17.
The best teams will compete in the Grand Prize Awards on May 18.
Participating teams will then join a parade and a farewell gala in the old quarter of Hoi An on the evening of May 18.
According to the centre, the competition will be an opportunity to promote Hoi An as a peaceful rendezvous for choirs, and a cultural exchange experience for Vietnamese and international choirs at the UNESCO-recognised World Heritage site.
In 2017, La Salle Chorale from the Philippines was awarded the top prize.