We wrote new musical settings
Then they should go back and try again. Impossible to sing too. How one can compare it to Setting Three, and then call in acceptable, sure blows my mind!
I was raised in the ULCA/LCA with the 1958 Service Book and Hymnal. While in the Texas Lutheran College Choir, we went around to local churches and sang through the new green LBW liturgies and "new" hymns to help congregations learn the new hymnal (I was the first cantor to chant an LBW liturgy at the TLC chapel). Then later my wife and I as music directors went through the ELW training seminar. Now (post-2009) we are in an LCMS congregation participating in two of the choirs. Personally, DS III is my favorite and DS IV is my least favorite, but I don't dislike any of them.
All that to say that all the new liturgical settings are VERY singable. If you want something unsingable and woefully unmemorable, check out ELW settings I and II.
As far as new hymns, adding to Lutheran hymnody is as old as the Lutheran church, though personally I prefer the older ones. Try out St Patrick's Breastplate for Holy Trinity Sunday (though MOST Lutherans turn it into a dirge); it encapsulates the doctrine of the Trinity in no uncertain terms, yet it is really, really Irish, and really, really old. (My wife and I sang it last year with my son playing Irish fiddle accompaniment in a traditional service; it blended well with the Trinitarian theme of the day.) In the present day, African and Latin American Lutherans are contributing much to the life of the Lutheran Church, and their music is part of that.
IOW, though it sounds counterintuitive, one
might say it is the
more traditional Lutheran who adds doctrinally sound new hymns and liturgical settings into congregational use.
Kurt