Top 10 Metal Introductory Songs

Songs are ordered in a certain way suitable for beginners - these songs aren't very heavy, complex, dark or fast. Songs with clean vocals and somewhat catchy melodies / choruses. Nothing extreme.
The first things beginners need to get used to, are: classical influence in metal music, powerful music and vocals. But these elements should't be emphasized at this level - they should be present in small doses.

This list is non-votable because:
1) I put the songs in a certain order that shouldn't be changed - it took me time to select these particular songs and put them in this particular order.
2) I don't wanna see Kanye West, Madonna, Silento and similar added to this list by trolls.
Thanks for the understanding.
The Top Ten
1 Highway Star - Deep Purple
2 Holy Diver - Dio
3 Land of the Free - Gamma Ray
4 Melancholy (Holy Martyr) - Iced Earth
5 I Want Out - Helloween
6 Stargazer - Rainbow
7 Defenders of the Crown - Edguy

Time for something faster yet still melodic and not heavy.

8 Run to the Hills - Iron Maiden
9 I Am - Theocracy

It isn't very heavy or fast but it's longer, more complex and more progressive. It's time for metal epicness and more evident classical influence.

10 Diabolus - Primal Fear

At #10 because it's not fast but it's almost 8 minutes long and is darker than the perevious songs.