That picture is about as far from being The Curtis brothers as it is possible to get.
At least the ones I listen to.

http://www.google.com/imgres?q=the+curtis+brothers&um=1&hl=en&client=firefox-a&sa=N&rls=org.mozilla:en-US:official&biw=1024&bih=570&tbm=isch&tbnid=CssLIk9FynOF3M:&imgrefurl=http://theurbanflux.wordpress.com/2009/12/07/the-curtis-brothers-quartet-nominated-for-an-independent-music-award/&docid=-UPGTJXxA9yoIM&w=200&h=308&ei=eUxPTsjUK5LUgAeJyO3uBg&zoom=1&iact=hc&vpx=368&vpy=127&dur=2059&hovh=246&hovw=160&tx=100&ty=153&page=1&tbnh=125&tbnw=81&start=0&ndsp=17&ved=1t:429,r:13,s:0

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