Lyric discussion by Vladith 

This song is a suicide note. After either failing to find success as a performer, or being unable to even try to follow his passion, the narrator decides to end it all.

He tells his mother to be proud of his accomplishments, and asks his father to forgive him for ending his own life.

The last several minutes of the song are the narrator's violent death, probably from pills, poison, or a noose. Just before he dies, his friends or relatives rush in, and see him convulsing. Then, it all fades away.

Absolutely this is a suicide note, and "As I take my final bow" is clearly a suicide reference. But I think interpreting it as his relatives rushing in is a bit of a stretch.

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