Final answer:
The Heili`genstadt Testament was written by Ludwig van Beethoven. It is a document where he expressed his frustration with his increasing deafness and contemplated sui`cide, but also his determination to continue composing.
Step-by-step explanation:
The Heili`genstadt Testament was written by Ludwig van Beethoven, a renowned composer.
It is a document that Beethoven wrote in 1802, during a period of deep despair and contemplation, where he expressed his frustration with his increasing deafness and contemplated su`icide. In the testament, Beethoven described his struggles, but also his determination to continue composing and to find solace and purpose in music.