1. People enjoy the rights and interests of music art: Free concerts provide the audience with zero-threshold opportunities to enjoy music. No matter the people with poor economic conditions or those who can't attend in person, they can easily enjoy excellent music performances at home or anywhere with internet.

2. Artists' publicity and interaction opportunities: For artists, online free concerts are a way of promotion and publicity. Through live broadcast platform, they can attract more attention and support from the audience. In addition, artists can communicate with the audience through online interaction to enhance mutual understanding and communication.

3. Contact and cohesion of society * * * Knowledge: Online free concert is a public welfare activity, which can promote social harmony and cohesion. In special times, such as natural disasters, epidemics or other emergencies, free concerts can stimulate people's emotions, rally people's hearts and transmit positive energy.

4. Explore the new business model of the music industry: online free concerts have created new business opportunities for the music industry. Through advertising and sponsorship on the online platform, artists and performance teams can get benefits, and at the same time, audiences can choose to pay for their favorite musicians and performances. The innovation of this business model is helpful to promote the development and sustainability of the music industry.

Generally speaking, the significance of holding a free concert online is to enable more people to participate in music art activities, promote artists, unite social knowledge, and bring new business opportunities to the music industry.