Guess the song :)

So i was listening to my iPod and drawing- and i was really bored. Really really bored. Then i had a *brilliant* [if i say so myself!] idea. Why not draw an impression of the song? So, of course, i started doing that. Then i had another idea- why not post the drawing on here and have people guess what song they represent? So that's what i'm doing :)
please comment what you think they are ^-^
The 1st one

The 2nd one :)
And 3, of course
And 4

And 5 :)

Oh look, 6

And last, but now least, 7 :)
So please please please comment with what you think are the song titles [and artists]
PEACE OUT! Sonja :)