In what form is Mozart's Lacrimosa(requem)?

Question

form being binary ternary ect....

Answer 1

The 'Lacrimosa' from Mozart's Requiem of 1791 is in a single section (therefore, terms such as 'binary' and 'ternary' are irrelevant here) and then leads straight into the 'Amen' which closes the multi-part 'Sequence' section of the Requiem. It is the Lacrimosa of which Mozart only wrote the first 8 bars on his deathbed before his early death at 35. It fell to the young composer and associate of the composer Franz Süssmayr to piece together a completion of this and other unfinished sections of the Requiem from the sketches and fragments on loose bits of paper that the dying Mozart had left around. It's interesting that perhaps Mozart's most famous work now contains so much material actually not written by him.