When Mozart's Requiem in D Minor, K. 626, was commissioned by a mysterious visitor (a messenger of Count Walsegg, who wanted to pass the composition off as his own), Mozart felt that the messenger was from heaven, telling him that his time was coming. He had been sick for a few months, and wasn't getting any better (he had a suspicion that a composer rival had poisoned him). He had a great fear of death. He wasn't in a good financial position, which worried him even more since he had a wife and two sons.
The Requiem in D Minor is probably Mozart's most incredible work. Unfortunately, a large portion of it was unfinished when he died. His pupil Franz Xaver Süßmayr finished the work after Mozart passed away.
The story of the Requiem inspired me to write a little piece of poetry based on Mozart's point of view while he is writing his last piece of music. I never write poetry, and this therefore doesn't follow any sort of writing rules. I just wrote what came to me and I hope you like it!