modern methods of publication have made hymnals much more accessible to the public today than previously. the practice of "lining out" the lyrics of hymns has therefore largely fallen away, although it continues to be practiced in some traditional churches. in the twentieth century, christian music has developed to reflect the emergence of a diverse array of musical genres including rock, metal, pop, jazz, contemporary, rap, spiritual, country, blues, and gospel. the use of specific genres and styles of music in church services today varies across denominations and according to the personal preference of pastors and church members. as of the late twentieth century, there has been a widespread preference in less traditional churches towards using contemporary music (particularly, "praise and worship" songs, which attempt to preserve the religious intent of hymns but use contemporary lyrics and a more modern musical sound instead) as well as gospel and spiritual music.