A big battle for the top, plus see what else was in the Top 40, including Kylie, Blazin' Squad, and Javine.

Looking back at Rihanna's balls-out banger that set the tone for the next decade on how to deliver an instant smash.

The US rapper's breakthrough hit took over the world 25 years ago this week.

18 years ago this week, three sisters became unlikely global superstars with their chart-topping hit The Ketchup Song.

It's 25 years since the band's classic began its road to being one of the best-selling albums of all time.

Plus see what else was in the Top 40 this week in 2007, including Shayne Ward, Rihanna and Amy Winehouse.

It's 25 years since Mick Hucknall & co. earned their first and only Number 1 single. Check out the full Top 100 from this week in 1995.

Twelve years ago this week, Nashville rockers Kings of Leon divided fans with a song that took over the world.

It's the start of a new era.

Plus, see what else was in the Top 40 this week, including new entries from Daniel Bedingfield, Hear'Say and H & Claire.

Robyn's unlikely ascent to Number 1 in 2007 is the stuff of pop legend.

Robbie treats us all to a pound of flesh as he takes to the roller-disco for his most controversial video yet, this week in 2000.

Jade, Jesy, Leigh-Anne and Perrie third chart topper was Number 1 five years ago this week.

We talk to producer Mike Spencer about Kylie's comeback classic.