Destiny: Rise of Iron - how to unlock the Sing the Iron Song achievement using the bells in the Iron Temple

Here's exactly how to get the hidden achievement.

The Iron Temple in Destiny: Rise of Iron is home to a collection of bells.

Their purpose was figured out yesterday - use them to play the Rise of Iron theme for a secret achievement.

That's all well and good, but if you're tone deaf, you're going to need more than that.

Luckily, Reddit has come to the rescue with a handy guide on which order to play the bells

You'll need at least two people to carry this off as one of the bells is in a separate part of the temple.

Just follow the screenshots here to play the tune.

One redditor confirmed that they unlocked the achievement using the guide.

"I did it with a fireteam of four. The order: 1,2,3,1,5 - 4,3,2,3,1 You will hear a sweeping sound effect while you're playing it near the end of the song if you did it with the right timing."

It seems though you only need to do the "1,2,3,1,5" bit though, as this reddit user pointed out - so save yourself some extra steps unless you really like making music.

So have at it!