In the past, participants of Ca Huế included only the elite class, mandarins, and the people with erudite literary knowledge and with the ability to compose beautiful and profound lyrics. They played instruments together and shared their thoughts through instrumental music and singing. The singing and the instrumental music of one person was the inspiration for the singing and the musical composition of another. Group members were also the audiences. They enjoyed their mutual talents respectfully. In recent years, Ca Huế has been performed on stage to also serve the common people. In this musical type, there is a clear classification between composers, performers, and audiences like professional music. The interactive relation among group members of Ca Huế chamber music can be presently only found in Ca Huế in private houses.