Recently, as the scale of the cultural content business market is being growed, it required that we should introduce the Korean music culture which is unique and competitive cultural contents to the worldwide. This paper proposes a Samulnori Ensemble System (SES), using a touch interface which plays the Korean traditional musical instruments. A SES consists of the Control Device which supports touch functions, the Performance Manager that detects signals from the Control Device and plays a melody, and the Communication Manager making a ensemble among the possible devices. Also, using the Network Time Protocol which is part of Synchronization Manager can be paly different speed communication environments. We utilized multi-touch functions to operate the system. We also implemented multi-touch interface and multi-play with other player for fun and interesting who are not interested Samulnori.