I suppose I shall jump on this Bandwagon! - Comments

All of those are correct :)

24. "Imaginary" by Evanescence...?

2. Animal I Have Become - 3 Days Grace
7. Bring me to life - Evanescence
12. My Immortal - Evanescence

20. Dorothy from Finding Nemo!

4. Breakaway by Kelly Clarkson
7. Bring Me To Life by Evanescence
11. I Hope You Dance by Lee Ann Womack
12. My Immortal by Evanescence
13. My Wish by Rascal Flatts
14. Never Too Late by Three Days Grace
20. Dori's Song from Finding Nemo!
23. My Heart Will Go On by Celine Dion
25. Colors of the Wind from Pocahantas
26. I Just Can't Wait to be King from the Lion King

Haha, I'm sure I know more, but that's all I got right now.