Choral-Improvisation on ‘In dulci jubilo’, Op. 75, no. 2 -- Sigfrid Karg-Elert (1877-1933) Title: Choral-Improvisation on ‘In dulci jubilo’Opus No.: Choral-Improvisation on ‘In dulci jubilo’Composer(s): Sigfrid Karg-Elert (1877-1933)