The striking, unconventional redesign of Norway's Krone bank notes by The Metric System and Snøhetta last year quickly went wildly viral.

The design of money is very similar across Europe – especially since the introduction of the Euro – so their modern, graphic reinterpretation resonated with a lot of creatives. The studios were winners of an semi-open pitch process, with Metric taking the front and Snohetta taking the back.

At the opening of the Designs of the Year exhibition this week, I caught up with Martin Gran from Snohetta and Christian Schnitler from Metric – who due to a missing microphone, had to share a lapel mike – to find out more about how they designed the notes – and how surprised they were by the all the attention.

Watch the interview above.