Fröhlich soll mein Herze springen
... that the German Christmas hymn "Fröhlich soll mein Herze springen" (Merrily my heart shall leap) by Paul Gerhardt was published by Johann Crüger, who also wrote the melody?
... that the German Christmas hymn "<b id="mwAXc"><a href="./Fröhlich_soll_mein_Herze_springen" id="mwAXg" rel="mw:WikiLink" title="Fröhlich soll mein Herze springen">Fröhlich soll mein Herze springen</a></b>" (Merrily my heart shall leap) by <a href="./Paul_Gerhardt" id="mwAXk" rel="mw:WikiLink" title="Paul Gerhardt">Paul Gerhardt</a> was published by <a href="./Johann_Crüger" id="mwAXo" rel="mw:WikiLink" title="Johann Crüger">Johann Crüger</a>, who also wrote the melody?