By the end of 2010, just 12 months after his debut, Bruno Mars had gone from unknown songwriter to a global one-to-watch. After featuring on two huge hits - B.o.B's Nothin' On You and Travie McCoy's Billionaire, he'd landed his own chart-topper with Just The Way You Are (Amazing).
His second headline single, Grenade, needed to secure his status as the latest pop superstar. Released ten years ago this week, Grenade did just that, debuting at Number 1 on the Official Singles Chart with 150,000 sales - the highest week 1 sales of any track released in January in 15 years.
It also hit the top spot in America, making him the first male artist in 13 years to score Number 1s with their first two headline singles.
Read more on officialcharts.com