This Sunday BBC 6 Music and The Hype Machine are joining forces to unveil the top 25 artists of the year so far in the 2012 Music Blog Zeitgeist.

As well as tracking who and what is currently the most talked about musicians online on a daily basis, Hype Machine also reveal their Music Blog Zeitgeist at the end of the year where they look at everything posted by their index of 863 key music blogs to ascertain the top artists, songs and albums of the past 12 months - but we've got them to do a special mid-year version just for us - and Tom will reveal the results on Sunday from 6pm.

We've also called on some of our favourite blogs - some listed by Hype Machine and some not - to ask for their thoughts on the artists who have made the biggest impact in 2012.

Keep an eye on our Facebook page and Twitter - follow #Blog6Music - as we'll start sending out their blog posts to get you thinking ahead of the show and give some other perspectives.

As always, we want you to get involved - so leave a comment on this blog about the artist who you think has made the biggest impact in 2012 (they don't have to be new), go to our Facebook page, Tweet using #Blog6Music and drag the tracks of the year so far in your eyes to our Spotify playlist.