Mars, one third of the songwriting and production team The Smeezingtons with Ari Levine and Philip Lawrence, not only co-penned his own solo global smashes such as Just The Way You Are (Amazing), Grenade and The Lazy Songs, but also the likes of Cee Lo Green's Forget You, Flo Rida's Right Round and Travie McCoy's Billionaire on which he also features. He has sold 36 million singles around the world, according to BMG Chrysalis.

Mars last year filed a lawsuit ...