Social Media has been a supportive yet crucial marketing tool to help one's business grow larger by simply being a right medium to accommodate the costumer's critics, suggestions, and opinion about its products. This paper examines the application of 10 steps of Social Media Strategy to an Indonesian Pop Band: ADA Band to see a real time marketing effect which resulted to a customer engagement for a long term marketing impact. This research will conclude the study of Word of Mouth (WOM) effect, which happens through several Social Media such as Twitter and YouTube. The topics of tweets and YouTube videos are chose, made, and published. Then, the insight from the public conversation are gathered and processed to see the impact of each published Twitter and YouTube content. The whole steps are successfully proved from the achievement of significant increases in each given targeted metrics.