Dissatisfaction with various revisions has led numerous congregations to continue using the previous hymnal, and according to a 1999 LCMS Commission on Worship survey, The Lutheran Hymnal was still used by 36% of churches in the Synod as their primary hymnal. The publication of another new hymnal, Lutheran Service Book in 2006, has restored many of the former hymnal's features in the hope that more widespread use can be achieved. A supplement, With One Voice (WOV), contains additional hymns and service music.