1. The Columbus Day riot: Frank Sinatra is pop's first star.
4. Elvis Presley turns into 'Elvis the Pelvis' on national TV.
8. The Beatles develop their own look for the first time.
15. Marvin Gaye records What's Going On.
17. David Bowie cuddles up to Mick Ronson.
22. Blondie record Parallel Lines.
23. Michael Jackson starts work on Off the Wall.
30. Prince records When Doves Cry.
31. Madonna releases Like a Virgin.
34. Kylie gets lucky.
35. Whitney Houston beats the Beatles.
38. Spice Girls form.
40. Elton John performs Candle in the Wind at Princess Diana's funeral.
41. Britney Spears wears pigtails.
42. Max Martin produces era-defining single.
44. Apple launches iTunes store.
45. Lily Allen appears on MySpace.
48. Smash Hits closes.
50. Lady Gaga writes Bad Romance on the bus.

FULL LIST.

So this is chronological?

Oh my ****ing goodness. I knew Bad Romance would be set in pop music history. A classic that will continue to slay throughout the ages. I'm just waiting for the first victim who's brave enough to copy the iconic sound.

Interesting.

No CRAZY IN LOVE OR SINGLE LADIES OR UMBRELLA? WHAAAAAAT.

If there is one thing I want her to be remembered for, it's Bad Romance.

Kylie gets lucky.

A flurry of midriffs, pigtails and monster keyboard stabs, ... Baby One More Time provoked a tangle of reactions Britney-watchers have since become very familiar with. On the one hand, delight at her pop panache and her ability to turn a single into an event. On the other, uneasy questions – is someone being exploited here, and if so, who? Spears? Her fans? You, the viewer?

None of the cover versions of ... Baby One More Time can touch the original, which gets the explosive neediness of teenage romance absolutely right. But it was the video that made Britney a star, and drew the most fire. Its school uniforms and dancing seemed purely salacious, but they were included at Britney's own insistence, after she rejected a more cartoonish original treatment as patronising to her and her audience. It was a decision that gave modern teenpop its greatest and most enduring icon.

Yass

And this was more important in pop history than Beyonce releasing Single Ladies or collaborating with Jay-Z?

#41 is iconic

For the UK it was.

Lily Allen is one of the most critically acclaimed native popstars by the British media. This is the Guardian, so, yeah, for them she's a more notable piece of pop history than Beyoncé.

I'm a little surprised by the exclusion of the "Single Ladies" video, simply because it seems like the moment that most cemented Beyonce's career. But no list can get everything right, I guess.

I would hate to think what would of happened to Britney, if she didn't speak up on the BOMT set. A icon was born

I've missed you sis. I'll proudly go on a Alkylieada suicide mission with you.

Britney deserves that. The word iconic gets thrown around too much, but that truly deserves it.

And I was just thinking, the other day, I was struggling to remember how Bad Romance goes.