One was a cover of an 80s pop classic, another was a fresh reinvigoration of a rock staple- but which came out on top this week in 2001?

So here's a story from A to Z about one of pop music's most iconic debuts

The debut single of one of our most self-assured, intelligent and funny pop talents is still one for the ages.

Released with Oliver Heldens, Gecko (Overdrive) set the early template for Becky Hill's career, still going strong 8 years later.

Written and produced by Calvin Harris, Call My Name was not just a brilliant re-introduction to Cheryl after years of hardship, it was the calling card of an artist tapping into her full, superstar potential.

And to mark Queen Elizabeth II's Platinum Jubilee this weekend, the Sex Pistols are re-releasing the iconic track, 45 years on...

They were so 3008 with this time-travelling futuristic bop.

It became Rita's fourth Number 1 in less than two years, at the time a record-equalling feat.

The Official Singles Chart was stacked with bops 11 years ago...including new entries by Lady Gaga, Yasmin and Take That.

The first solo single from the former N-Dubz member was an instant hit.

Looking back at ABBA's breakout hit, plus the rest of this week's chart from 48 years ago.

The legendary bootleg track kickstarted a new wave of techno hits in the new millennium - but is missing from the current digital landscape in its entirety.

It's ten years since Carly Rae Jepsen smashed in at Number 1 on the Official Singles Chart. Take a look at the full Top 40 from that week in 2012!