Metal Song Challenge - do you know these snippets?

Too hard.. Funny, when I did these for Maiden, people were guessing them very quickly - and they were only 1 second long!
 
That's the funny thing, though. Maiden fans know every single little snippet of Maiden songs, even if they can't place the name of the track straight away - just keep playing it in their head, wait for the guitar solo to finish, etc. Same thing with Metallica and the like.

Hmm... that was probably pretty obvious.
 
Point goes to Bucko for Diary of a Madman - Ozzy

Trixx, you of all people should no the other one - sorry not Sven Gali

Ill add some more snips of other songs soon.