One reality was that believers who together sang the same hymns in the same  way came to experience very strong ties with each other and even stronger  rooting in Christianity. Psalm singing nerved Huguenots to face death and  devastation during France's violent religious wars of the 16th and 17th  centuries. Palestrina gave an incalculable boost to the Counter-Reformation when  he provided masses, hymns, litanies, and magnificats that for many Roman  Catholics became as expressive of their faith as the congregational singing of  Protestants was of theirs. In his fine book Singing the Gospel,  Christopher Boyd Brown has shown that Bohemian Lutherans survived several  generations of imperial Catholic pressure because families and lay groups were  so much strengthened by the hymnody of Luther and his tradition.1  Anabaptism was a movement of song—non-instrumental, non-clerical, non-élitist—as  well as movement of belief; when Brethren or Mennonites sang, unaccompanied and  in free form, the hymns of Michael Sattler, who was martyred in 1527 for his  Anabaptist beliefs, they were affirming who they were as Christian believers and  who they were not.
 Which brings us to the second reality. As much as hymn singing has always  been one of the most effective builders of Christian community, it has also  always been one of the strongest dividers of Christian communities. In the early  decades of the Reformation, Calvinists broke with Lutherans over several  important matters, but one was existentially apparent at every gathering for  worship: the singing. Lutherans sang hymns that with considerable freedom  expressed their understanding of the gospel (like Luther's "A Mighty Fortress"  or "From Heaven High I Come to You"), and they often sang them with choirs,  organs, and full instrumentation. Calvinists, by contrast, sang the psalms  paraphrased and with minimal or no instrumental accompaniment (like the 100th  Psalm, "All people that on earth do dwell," which was prepared by William Kethe  for English and Scottish exiles who had taken refuge in Calvin's Geneva during  the persecutions of England's Catholic Mary Tudor). However natural it may now  seem for Protestant hymnals to contain both Luther's "A Mighty Fortress" and  Kethe's "Old One Hundredth," in fact it took more than two centuries of  contentious Protestant history to overcome the visceral antagonism to  "non-scriptural" hymns that prevailed widely in the English-speaking world. It  was even longer before organs, choirs, and instrumental accompaniment were  accepted.
 In other words, long before the contemporary "worship wars" that have become  such a central feature of both church formation and church division in North  America, battles over song littered the historical landscape—from full-scale  encounters in the Reformation era to major skirmishes in the early 18th century  over introducing the hymns of Isaac Watts (who offered loose paraphrases of  Scripture), then a bit later over the hymns of Charles Wesley and other notables  of the evangelical awakenings (who mostly gave up paraphrasing in favor of  biblically normed accounts of Christian experience), over the use of organs and  choirs (much debated throughout the 19th century), over whether and where to  sing the gospel songs of Fanny Crosby and Ira B. Sankey (much derided as  dangerously sentimental), over how to regard the burst of hymn-writing attending  the rise of Pentecostalism (ditto), and, most recently, over what to make of the  Jesus People bringing rock-n-roll into the church (the Jesus People and their  heirs have triumphed, though many true lovers of rock regard the outcome as a  Pyrrhic victory).
 This long history of both solidification and division raises an important  question: What explains the power of song so powerfully to shape, anchor,  encourage, disturb, unite, divide, and distract Christian communities?
 It is a much better question than can be answered in a brief essay on what  the churches must learn and unlearn in order to be agents of God in the world.  Yet at least part of the answer is that singing is a deeply rooted expression of  culture. Becoming self-conscious about culture and why, as illustrated by  Christian experience of song, reactions to cultural expressions are so powerful  has become imperative. With people, goods, and communications both electronic  and print now flying around the globe at unprecedented speeds, and—more  important—with almost all Christian communities daily confronting ever-expanding  instances of cross-cultural commingling, the church's effectiveness as the  herald of salvation and the hands of Christ for service in the world depends,  now more than ever, on self-conscious attention to cultural differences.
 Culture is defined in various ways, but I am using it to mean the frameworks  of understanding, in the broadest sense, under which people carry out their  lives. One classic definition came from the recently deceased anthropologist  Clifford Geertz: culture, in his depiction, is "an historically transmitted  pattern of meanings embodied in symbols, and systems of inherited conceptions  expressed in symbolic forms by means of which [people] communicate, perpetuate,  and develop their knowledge about and attitudes toward life." Thus, song as a  cultural expression is made up of verbal and aural symbols that express, or  heighten, meaning because of how people have experienced music throughout the  life course.
 In these terms, culture is substantially assumed, given, unquestioned, and  instinctive—though it can also become self-conscious over the passage of years  or when alternative expressions intrude into daily life. For example, you can  become aware that your instinctive emotional reaction to an old hymn, a school  fight song, or a snatch of elevator muzak is not a universal human reaction but  something resulting from your own singular biography and the associations you  have experienced in connection with those particular songs.
 Likewise, culture exerts a very strong pre-cognitive hold over how people  experience the world, but it is also possible for cultural attitudes and  reactions to change over time, and for people to learn and unlearn what strikes  them instinctively as right. For example, even late in life you can  self-consciously learn to appreciate, and even be moved by, Dave Brubeck, J. S.  Bach, and probably Twila Paris.
 Moviegoers who are conscious of connections between the scores they hear and  what they are watching on the screen know that Martin Luther once caught it  exactly: "For whether you wish to comfort the sad, to terrify the happy, to  encourage the despairing, to humble the proud, to calm the passionate or to  appease those full of hate … , what more effective means than music could you  find?" We are what we sing, the music we listen to regularly, the music we  instinctively like, the music that brings tears to our eyes or a charge of  energy to our spirits, the music that expresses our deepest longings and  strongest loyalties.
 Scripture recognizes the cultural depth of music by simply accepting and  recording its fundamental importance—from Genesis 4:21 (with the throwaway  reference to Jubal, "the ancestor of all those who play the lyre and pipe") to  Revelation, where the living creatures surround the throne of God and sing "day  and night without ceasing … 'Holy, holy, holy, the Lord God the Almighty, who  was and is and is to come'" (4:8) while every creature, "myriads of myriads and  thousands and thousands" sing "with full voice, 'Worthy is the Lamb that was  slaughtered to receive power and wealth and wisdom and might and honor and glory  and blessing!'" (5:11-12). Yet in the book of Revelation it is noteworthy that  when the great gathering of the redeemed is described—"from every nation, from  all tribes and peoples and languages"—this gathering is said to "cry out" its  praise ("Salvation belongs to our God who is seated on the throne, and to the  Lamb!" [7:9-10]), while in the same scene the angels around the throne are said  to "sing" ("Amen! Blessing and glory and wisdom and thanksgiving and honor and  power and might be to our God forever and ever! Amen" [7:11-12]).
 Too much should not be made of the difference between "crying out" praise and  "singing" praise. But it does point to the fact that singing is a special  challenge when Christian believers gather from every land and tongue or, we  might say, from every culture or even subculture. The new Christian music of  Andean, Thai, Tanzanian, or Mongolian congregations can be jarring to most  believers from the West, even as Western hymnody can be as alien to those  congregations as Western individualism, Western economics, or Western clothing  (culture vs. culture). Likewise the contemporary praise of Hillsong can sound  like an unintelligible musical tongue to believers whose roots are deep in  Charles Wesley or John Newton, and vice versa (subculture vs. subculture). In  these and many other occasions of musical disharmony, we see again the  countervailing realities that have long marked Christian song: music is an  exceedingly powerful medium for securing Christianity in a community; different  forms of music are one of the most obvious manifestations keeping worshiping  communities apart. Explaining why both realities exist requires attention to  several theological truths.
 Classical theology, as augmented by the rich insights of contemporary  missiologists, is clear about a great deal that goes into a Christian  understanding of culture. First, God is the originator of everything that  constitutes culture. The accounts of early Genesis are peppered with  culture-making creations, including the naming capacity of language (2:19), the  internalization of standards defining right and wrong (2:16-17, 3:1-14), the use  of tools for human purposes (4:22), and, again, the capacity for music  (4:21).
 Second, without denying that humans abuse the creation for sinful purposes,  Scripture is also clear that, because all humans are redeemable, so also can the  structures of all cultures be used to honor God. Thus, at Pentecost many  languages conveyed the gospel message (Acts 2:4-11), even though at least some  speakers of the various languages must have held others in contempt as  deficient, barbaric, or uncivilized. The Apostle Paul, when addressing the  Athenians (Acts 17:26-28), recognized the worth of innate religious longings and  also of artistic works arising from cultures that had not yet received the  gospel. And in Revelation we read that into the City of the Lamb at the end of  time will come "the kings of the earth" with "their glory," as well as the  people who "bring into it the glory and honor of the nations" (21:24-26). This  text is plausibly referring to the ornaments of civilization disbursed  throughout the world's various cultures. The pointers toward a potentially  positive evaluation of culture, wherever it is found, have been spelled out by  the missiologist Andrew Walls: "Christ took flesh and was made man in a  particular time and place, family, nationality, tradition and customs and  sanctified them, while still being for all men in every time and place. Wherever  he is taken by the people of any day, time and place, he sanctifies that  culture—he is living in it."
 In such a Christian view, cultural diversity is a good thing because it  manifests the bountiful fullness of God's creating and redeeming work. Drum sets  and pipe organs and the kora (a 21-string harp used by the Mande in Senegal) may  all, therefore, be employed with great effect to praise God as the author of  salvation—at least for those to whom drum sets or pipe organs or the kora are  culturally appropriate. To make this affirmation would seem only to flesh out  the joyful proclamation of 1 Timothy 4:4, "Everything created by God is good,  and nothing is to be rejected, provided it is received with thanksgiving; for it  is sanctified by God's word and by prayer."
 But what then of Christian life together? If you are a believer who worries  about throwing up when you find yourself too close to the drummers during an  extended praise set—or a believer who falls asleep before a Bach prelude gets to  the fugue—or a believer who doesn't really feel the gospel until it is  accompanied on the kora—then the divine sanctification of cultural diversity  would seem to cancel out the divine mandate for Christian unity.
 The solution may lie in a third theological affirmation—that we are living in  "the time between the times," the "already but not yet," where the gospel is  really and truly active in the world but not yet manifest in its completeness.  In this suspended age, signs of the fully realized Kingdom do abound. It is said  that William Wadé Harris, who early in the 20th century was so important for  indigenizing Christianity in several West African locales, loved to sing "Lo, He  Comes with Clouds Descending," a great, but also complex, Wesleyan hymn from the  18th-century evangelical revivals. Later in the 20th century, a North American,  Robert Savage, who worked at radio station HCJB in Quito, published popular  gospel songs for Latin America's nascent Protestant churches that skillfully  used local instrumentation and tempos.
 The increasing number of such examples makes it possible to imagine a fully  harmonious and spiritually edifying service of Christian worship where new  Christian believers played Palestrina on the indigenous musical instruments of  Burkina Faso, where an African American gospel choir led in a chorale of  Heinrich Schütz, where white middle-class Presbyterians surged with Christian  ecstasy to the beat of a drum, where teenaged believers filled up their iPods  with the Robert Shaw Chorale, and where learned Western theologians delighted in  a nearly infinite repetition of "God is so good, he's so good to me."
 That it is possible in these last days—in days of increased cultural  self-awareness, cross-cultural contact, intra-cultural antagonism and  appreciation—to imagine (if not yet to realize) such a vision means that the  miraculous day draws nearer as described by the psalmist millennia ago:
 Praise the Lord! … Praise him with trumpet sound;  praise him with lute and harp! Praise him with tambourine and dance; praise him  with strings and pipe! Praise him with clanging cymbals; praise him with loud  clashing cymbals! Let everything that breathes praise the Lord! Praise the  Lord!
 Or, we might say today, "Praise him with syncopation and on the beat. Praise  him with 5-tones (the Thai xylophone), 12-tones (most Western music), 24-tones  (Arab music), and all scales in between. Praise him a cappella, with orchestra,  and with drum set. Praise him with works of supernal intelligence and greatest  simplification. Let everything that breathes praise the Lord! Together."
 Mark Noll is Francis A. McAnaney Professor of History at the University of  Notre Dame.
 1. Christopher Boyd Brown, Singing the Gospel: Lutheran Hymns and the  Success of the Reformation (Oxford Univ. Press, 2005). A review is  forthcoming in Books & Culture.