"Spotify offers a proven revenue generator through streamed music, " says Avicii's manager, Ash Pournouri.

BBC: Digital music: Can streaming save music sales?

Avicii vs Nicky Romero's previous number one, I Could Be The One, stayed at five.

BBC: Justin Timberlake

The definition of DJ has shifted from John, Dave, Bubba and Shelly, to actual, physical DJs, who spin "records" like Diplo or Avicii.

CNN: Who needs radio? I'll take the Web

This year, for instance, an obscure DJ from Lichtenstein, Al Walser, is nominated for best dance recording next to heavyweights such as Avicii and Skrillex, after he made lobbying efforts on a private website for Academy members.

WSJ: Not Your Granny's Grammys

However, Spotify has now become the biggest source of income for some of the country's most popular artists, such as Stockholm-based House DJ Avicii who signed with Universal Music Sweden in August 2010 and has had five hits with the label.

BBC: Digital music: Can streaming save music sales?