1.

Britney Spears - Circus

Katy Perry - I Kissed A Girl / Hot 'n' cold

Finger Eleven - Paralyzer

2.

Muse - Uprising / Knights of Cydonia / Exo-politics / Sing For Absolution / Microcuts / Stockholm Syndrome

Saosin - You're Not Alone

Breaking Benjamin - Forget It

Kerli - Walking On Air

The Pretty Reckless - Makes Me Wanna Die / Zombie

Obliq - The Lonliest Figure

Bon Iver - Blood Bank / Re:stacks / Beach Babys

3.

Hoffmaestro - Highwayman

B.O.B. feat Hayley Williams - Airplanes

Linkin Park - Wretches And Kings

Katy Perry - Firework / Teenage Dream / Pearl

Scanners - Salvation

Within Temptation - Somewhere

Far East Movement - Like A G6

My Chemical Romance - Summertime / Na Na Na (Na Na Na Na Na Na Na Na Na)

RED - Take It All Away / Start Again

Trading Yesterday - Shattered
LMFAO - Partyrock Anthem

There is a lot more to the list.
But I think these songs brings back the memories better than any text I'd write.

Moments and people <3