<div class="WordSection1"><p><em>The purpose of this study was to determine: 1) Whether eWOM has a positive effect on purchase decisions, 2) Does Ease of Use have a positive effect on purchase decisions, 3) Does trust have a positive effect on purchase decisions. Data collection in this study was carried out using a questionnaire distributed online to Blibli users. The number of respondents used in this study is 100 respondents. The sampling technique used in this study is non-probability sampling by relying on judgmental sampling. Partial least square-structural equation modeling (PLS-SEM) analysis was performed using the SmartPLS 3.0 program to analyze the data. The findings of this study are that eWOM, Ease of Use and Trust have a positive effect on purchase decisions. The contribution of this research can provide input to the Blibli company to better maintain and manage ease of use, trust and electronic word of mouth so that Blibli users can use Blibli more freely and comfortably so that transactions carried out in Blibli can run more smoothly and safely, which is then will give Blibli an advantage as a player in Internet-based transaction systems because it is a fast paced industries that can change in a matter of time.</em></p></div><em><br clear="all" /></em>

Social media nowadays can be used not only for interacting with each other, exchanges ideas, and develop new friends, furthermore it can be used to promote and selling products or services. It is also used for musician for sales and promotion of their CD album to their fans through social media, especially for musicians , who choose to be independent with limited budget and distribution channel. One of the musician who choose to be independent is Dua Drum. The purpose of this study is to examine the relationship between musician’s social media (Interactivity & Sincerity), the tie that fans may develop via social media (Sense of Closeness & Reciprocity), and purchase legal CD album. This Research is using a quantitative approach with gathering 127 responses through online questionnaire and analyzed using Structural Model Equation (SEM). The result of this research is there are a positive relationship between Interactivity & Sincerity with Sense of Closeness & Reciprocity, and also a positive relationship between Sense of Closeness & Reciprocity with Legal Purchase Intention of CD album. Keywords: Music, Internet Marketing, Social Media Marketing, Purchase Intention