Walter Blankenburg
Walter Blankenburg ( 31 July 1903 – 10 March 1986 ) was a German Protestant pastor , director of church music and musicologist , who focused in several publications on liturgy , hymnology , and on the sacred music of the early Baroque period , especially by Johann Sebastian Bach . 
<triplet> Walter Blankenburg <subj> 31 July 1903 <obj> date of birth <subj> 10 March 1986 <obj> date of death