Producing is the most typical way of popular-music making method. It means producer acts as a commander for music making. Music producer choose songs to record and arrange music and so on. With the producer vocal-director also plays an important role too. The role of the vocal-director means to arrange vocal part for the singer during the recording procedure. Therefore the vocal -director's mission is to make the music best for the singer by interpreting score right. Until now, the domain of the vocal trainer is limited to work in recording studio work. Vocal-director should cooperate with singer from the training period. Actually in the recording field vocal-director has confronted with limits to make the singer to find its new variation of voice. Making its own identity is the most important thing for popular singers. So the vocal-director should work together with the singer for making its own identity from the pre-training period . In this study, I researched the role of vocal director and the method of vocal-directing.

In recent years, a rapid increase in demands for the soft magnetic composite parts has been created and it has been tried to improve their properties by various processing methods, alloying elements and compaction parameters. Warm compaction method has been used for the reduction of residual stress, the improvement of magnetic properties and the higher densities. In this work, the effects of warm compaction and polymer binder on magnetic properties of Fe powder core were investigated. The sintering powder, Fe oxide, was ball-milled for 30n hours. And then ball-milled Fe oxide powder was reduced through hydrogen reduction process. The hydrogen reduced Fe powder and polymer binder were mixed by 3-D turbular mixer. And then the mixed powder was warm-compacted. The magnetic properties such as core loss and permeability were measured by B-H curve analyzer.