Previous survey about service quality, customer satisfaction and customer loyalty before revealing various relationships in mobile music application industry

: Based on the existing researches, this paper provides the various dictionaries of important concepts, properties, and relationships among service quality, customer satisfaction and customer loyalty before executing a research to find out what kind of relationship among the above three variables in mobile music application industry. This paper is contains the following contents. First, in the introduction, the current state of the mobile music application industry and the purpose of this paper will be described. Second, we will summarize the existing studies on the definition and characteristics of important variables that managers should consider to improve the competitiveness of mobile music application products, ie, service quality, customer satisfaction, customer loyalty, and so on. In conclusion, this paper suggests the future research guidelines