What Heiligenstadt was despairing letter about his hearing loss.?

The Heiligenstadt testament refers to the letter written by renowned composer Ludwig van Beethoven in 1802 where he expressed deep anguish and despair over his increasing hearing loss. The personal and emotional document showcases Beethoven's innermost struggles at the time. Originally thought to be a suicide letter, it is considered a profound and poetic reflection on his emotional and psychological state during this turbulent period of his life.