Who wrote that the best results come when Guetta rips artists from their comfort zone ?
McDonald also worked with the " Leo Green experience " as a guest vocalist at jazz venues in the UK like Ronnie Scott 's and supported the Roy Ayers.2008 McDonald supported the charity Childline Rocks performing alongside Roger Daltrey ( The Who ) , Thunder , Lulu & Russ Ballard at O2 Indigo , London .