Das Christ-Elflein
... that Hans Pfitzner composed Das Christ-Elflein (The Little Elf of Christ, sometimes given as The Little Christmas Elf) first as incidental music, then in 1917 as an opera?
... that <a href="./Hans_Pfitzner" id="mwAqQ" rel="mw:WikiLink" title="Hans Pfitzner">Hans Pfitzner</a> composed <i id="mwAqU"><b id="mwAqY"><a href="./Das_Christ-Elflein" id="mwAqc" rel="mw:WikiLink" title="Das Christ-Elflein">Das Christ-Elflein</a></b></i> (<i id="mwAqg">The Little Elf of Christ</i>, sometimes given as <i id="mwAqk">The Little Christmas Elf</i>) first as <a href="./Incidental_music" id="mwAqo" rel="mw:WikiLink" title="Incidental music">incidental music</a>, then in 1917 as an <a href="./Opera" id="mwAqs" rel="mw:WikiLink" title="Opera">opera</a>?