a) Go onto this Facebook post and hit Share underneath the post to share the link on your own Facebook wall.
b) Go onto the message we posted on Twitter here and Retweet it.
In a few days we'll pick 1 winner on Facebook and 1 on Twitter to win a copy of Yann's latest album Skyline.
Update: Our winners are Pete Guest on Facebook and JoMcNAb on Twitter. Keep an eye on the news feed for more of these giveaways!