Modern disco track with violins and black vocals

AM pretty sure this track came out in the last few years, though it is obviously heavily influenced by 70s disco. It has a central violins riff reminiscent of Bony M, Sister Sledge, Abba or the Bee Gees. I think the riff might segue from strings into trumpets or horns at some stage. The vocals sound like a black man's voice to me, soulful, bluesy and beautiful, rather high and something almost Nina Simone about them. Its a long track, at least 5mins imo.

Please help!

Gnarls Barkley - Crazy ?

http://www.youtube.com/watch?v=Qe500...eature=related

Not that one - the vocals in this are much much less prominent. Its mainly about the very prominent violin riff, which gets everyone onto the dance floor.

any disco house experts out there?