The final breaths: Mozart's Masonic Funeral Music, K. 477

Unless you're an avid student of Mozart, you've probably never heard this piece nor did you know that it existed.  However, I would rank it as one of his best due to the tonal imagery that he used to create the sounds of death.  As you listen to the first bars you can actually hear the labored "breathing in and breathing out", followed by the final breath as the soul passes through the veil.  You will also hear his use of the trombones, an instrument that in Mozart's day was only used in funeral music and/or Requiem masses.