More than a century has been elapsed since the Protestant Church Music had laid its root on Korean soil with the arrival of two American missionaries, H. G. Underwood and H. G. Appenzeller, in 1885. The two hymn books they carried with them may properly be acknowledged that Korean Protestant Churches first came in contact with formal Western church music, with the exception of Catholic Church Music which precedes protestant church music by another century, The Word and music were given to Korean churches simultaneously. The ministry of the Word has been unprecedently and unimaginably successful in Korea that churches all over the world took the Korean Churches as the model for a case study for its overwhelmingly rapid revival and growth in such a short period of tie. The Korean churches, however, are now undergoing experience of the aftermath of unbalanced diet of spiritual food, the Word and music. The church is founded on the Word and music. Many church fathers emphasized the importance of music, and the spiritual and moral impact music has on Christians not only in worship services but also in their everyday life. The Korean Churches, however, have concentrated only on the ministry of the Word neglecting, if not ignoring, music as a whole. This does not mean to say that music has not been used in churches at all, but, rather, the development of church music has not been kept abreast with, that of the ministry of the Word. In other words, the theology of the Word at the cost of the theology of music took the priority, thereth leaving Korean Churches crippled to cope with the churches world -wide. For Martin Luther, music was a "noble, wholesome, and joyful creation," a gift of God to the chruch, only next to theology in importance. For Luther to "say and sing" was a single concept resulting from the inevitable erruption of joyful song in the heart of the redeemed. Philip Melanchton, who assisted Luther in the reformation movement, supported Luther's view of church music saying, "When church music ceases to sound, doctrine will disintegrate. Religious music applied to life is a sanctification of life." The intertwining duet of music and theology forms the substance of Biblical theology. Although there is no specific chapter and verse in which is to be found a clear theological statement concerning the nature and function of music, there is nevertheless hardly a page of the Bible from which some musical inference cannot be drawn. As the Bible unfolds the records of the acts of God the continuous sound of music is heard. Johann Walter, who assisted Luther with his musical expertise, emphasized the organic unity between music and theology. He thought that music, "practically and inheritantly," belongs to theology. He believed that "music is intertwined and shackled to theology that anyone who disires, researches, and studies theology, must have an understanding of the art of music even though he does not read, feel, and know music." It appears to the writer that the overwhelming number of Korean ministers and theologians have overlooked, knowingly or unknowingly, the importance of the role of music in the worship service for the past century due to the lack of theology and philosophy of church music. Should we admit that late is better than never, there should be an enlightening effort on the part of every concerned ministers, permanantly retarded or handicapped by lopsided diet in our Christian Life. If the two ends of a scale, the word and music, be held in equilibrium in Korean churches, the true evaluation of the growth of the Korean Church, not only physical and quantitative growth but also spiritual and qualitative growth, may well take its much desired due place in the future.