The digital music industry has grown rapidly in many developed countries, such as, the US, the UK and Japan. By contrast, this industry appears to be growing more slowly in developing countries such as Thailand. This may be caused by many reasons, including music piracy, limited availability and coverage of broadband internet, and music file quality. The purpose of this paper is to determine the success factors influencing online music commerce, which may assist online music providers in developing their strategies. This paper utilizes a theoretical model from DeLone & McLean Information Systems Success Model and the value-intention framework to investigate the causal factors of success of online music commerce. The results show that information quality, system quality, service quality, convenience, trendiness, perceive price, and music devices is significantly related to the success of online music commerce.