Throughout the course of the week a code will be released via great websites and blogs (containing an 'artist name' and 'song title'). When the song is played during The Big Top 40 show every Sunday from 4pm, visit The Big Top 40 website and enter the code while the song is playing for a chance to win.
On top of this there will also be a monthly competition for someone to meet a Top Ten music artist at an intimate gig.
The code this week is:
Diana Vickers, Once
Hear the song, click here, type it in!