Nokia Music has over six million tracks and it's been added to almost daily. Every week, you'll find Single and Album of the week are being promoted, along with the official Top 40 Singles and Album charts.

Single of the week is Green Day with their first single in over four years, Know Your Enemy and you can download it from Nokia Music

Green Day return after almost a five year absence from the studio with a slab of anthem rock that isn't about to open up a new fanbase but should appease anyone worried they'd never follow up the success of American Idiot.

It's the lead single from the forthcoming 21st Century Breakdown album, which is expected to launch on Nokia Music this Friday - 15th May.

In the meantime, you can check the song out for yourself as it the Single of the Week on Nokia Music. It can be downloaded for juts 80 pence. Obviously, if you've signed up for Comes With Music, then you'll be able to download the track, as well as the B-sides for free  and add them to your music library.

If you've not got Nokia Music installed on your PC then you can get hold of it for free from Nokia Music, while those with Comes With Music will find it ready and waiting - Rock on!