Roy Irawan | Percussions, VocalPlayed for Symphony Music Concert Recording artist, Former Drums & Percussions teacher at Disciples Music Center, Cantata Music Course& Willy Soemantri Music SchoolDirector of Major Seventh Concert 2008 at Erasmus HuisMajor Seventh Live at Java Jazz Festival 2009Director of Major Seventh Concert 2009 at Goethe HausMajor Seventh Live at Java Jazz Festival 2010