Digital Downloads
- Songwriters:
- Dave Mustaine, Dave Ellefson, Marty Friedman, Nick Menza
- This Song Also Appears On
- Youthanasia [Bonus Tracks]
- Youthanasia [Japan]
- (See All Releases)
Song Lyrics: 'I Thought I Knew It All'
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![Youthanasia [Japan]](http://o.aolcdn.com/art/amgmusic/album/pop/cov75/drd700/d772/d77281s0q67.jpg)
![Youthanasia [Bonus Tracks]](http://o.aolcdn.com/art/amgmusic/album/pop/cov75/drg300/g398/g39848z3kre.jpg)