Needs more 'lament'.
As sinZlazTWordZ said, it's quite short. I had the opposite problem than in his review, however; The notes between 10 sec and 30 sec were the only section that seemed to give the feeling of sorrow. The rest of the notes were too strong. You could rename this to 'stream of regret' or the like and it would be more fitting, or add softer notes throughout the whole thing to make it sadder. Either way would render this work much more fitting.