Which song out of these should I learn first?

Dream Theater-Another Day, Under A Glass Moon

Racer X-Scarified

Nevermore-The Psalm of Lydia

Dio-Holy Diver, Rainbow In The Dark

Iron Maiden-Aces High, Powerslave

Children of Bodom- Needled 24/7

King Diamond- Black Horsemen

Symphony X- Set The World On Fire, Seven, Eve Of Seduction

Megadeth- Tornado Of Souls

Testament- The Ballad

Ozzy- Revelation (Mother Earth)

Also, which song do you think is the easiest
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