Graf Sound offers a free streaming music service. Grafsound's main source of revenue is advertising fees, and users have to pay to listen to music without ads. In addition, it also generates other profits through diverse side services (DApp). GrafSound's app is planned to provide a variety of services such as personal broadcast (Mcn), crowdfunding, Goods shopping center, audition, social networking (SNS), voting, ticket sales, etc. These features will help secure resources for Grafsound's service activities, besides, they also contribute to boosting the token ecosystem of GSMT.