The shape of the whole opera is often said to be like a mirror - Lulu 's popularity in the first act is mirrored by the poverty she lives in during Act III . Also , Lulu 's husbands in Act I are played by the same singers as her clients in Act III . The large-scale structure of Lulu is often said to be like a mirror â `` Lulu 's popularity in the first act is mirrored by the squalor she lives in during act 3 , and this is emphasised by Lulu 's husbands in act 1 being played by the same singers as her clients in act 3 .