Personally, Gui 
Boratto has always been one of my favourite artists. With countless licenses with respected European labels, he has managed to appear in the charts and playlists of the world's most famous producers and DJs. Needless to say, furthermore, that his tracks of their own are very popular in the progressive house scene aswell. Azzurra is one of his newest tracks and it already takes place on Beatport's Top 100 Downloads. No further comments, just listen to it!:P