this morning on the place (or not) of hymnody in the Mass (Roman vs. Lutheran). It is absolutely true that for Lutherans, there is no final or real preference between chant and hymnody. They flow back and forth. A Lutheran Mass in the early days after the Reformation might have the Gloria chanted in Latin or Decius' paraphrase "All Glory be to God on high" sung in German. They were completely at home with either chant or hymn. The Latin Sanctus might be solemnly chanted or Luther's soaring setting of "Isaiah, Mighty Seer." They were pretty much interchangeable in the minds of the framers of the Church Orders.
And it is one of the strengths of LSB that it is not weak on either. True, there are tons of hymns, but we also find chants among them. The Victimae Paschali is tucked in beside "Christ is Arisen" - and there the chant and the hymn join in a vigorous resurrection dance together. The O Antiphons are pointed for chanting and printed opposite the hymn based on them: "O Come, O Come, Emmanuel" - perfect for using both. Divine Service III features some Anglican chant and some German and some based on old Gregorian (the Kyrie or Agnus, for example), but also offers opportunity for numerous hymns. The Psalms (and Introits and Graduals and Verses) may all be chanted in the simple modern chant settings popularized among Lutherans in LBW and later books. The pastors here frequently chant the collects, preface and proper prefaces (the prefaces retain their traditional Gregorian tones). Anywho, it is a virtual banquet of music, in all sorts of genres and from all eras of the Church's life.
What IS missing that figured huge in Lutheran musical history is the music performed by the choir and orchestra each week. Our choir "anthems" are a pale reflection of the richness to which Lutheran congregations in years past were treated on a regular basis (at least in the cities). Just check out this or this or this.
Still, when Roman Catholic visitors have commented on the services of St. Paul's, they frequently mention "all that music." I haven't a clue about what the average Roman Mass in the area offers, but apparently it does not come close to offering the musical richness that our typical liturgy offers. The full treasure house of the Church's hymns AND chant - just one of the many, many joys of being a Lutheran Christian.