O Ewigkeit, du Donnerwort, BWV 20
... that Bach was "fired up as never before" when he began his second cycle of chorale cantatas with O Ewigkeit, du Donnerwort, BWV 20, for the first Sunday after Trinity in 1724?
... that Bach was "fired up as never before" when he began his second cycle of chorale <a href="./List_of_Bach_cantatas" id="mwCpQ" rel="mw:WikiLink" title="List of Bach cantatas">cantatas</a> with <b id="mwCpU"><a href="./O_Ewigkeit,_du_Donnerwort,_BWV_20" id="mwCpY" rel="mw:WikiLink" title="O Ewigkeit, du Donnerwort, BWV 20"><i id="mwCpc">O Ewigkeit, du Donnerwort</i>, BWV<span id="mwCpg" typeof="mw:Entity"> </span>20</a></b>, for the first Sunday after <a href="./Trinity_Sunday" id="mwCpk" rel="mw:WikiLink" title="Trinity Sunday">Trinity</a> in 1724?