The "di sortita" type of this solo is sung by a character about to make an exit--sometimes not a moment too soon
In the Tempo di mezzo Wurm has an extended solo 
passage, [DOC] [TLE] ORC_27 book EDIT for Pozzoli.qxd [PAR] In the words of Ftis, she 'began to sing sometimes above the note, ..... and that 
little not indicative of the character of his musical genius, ... music is too good.