Robyn surprised by chart success

Robyn has admitted that she is surprised by the success of her comeback hit 'With Every Heartbeat'.

The Swedish star told the NME that she is proud to have claimed Sunday's number one spot without mounting a lavish promotional campaign.

"I am getting lots of emails today about the single doing well in the UK. It is all good," she said.

"I'm surprised - I think it's cool when a song finds its own way and people are reacting to it without us spending lots of money doing the things you're supposed to do when you have a hit. I'm excited."