London group. The line up of Incognito is constantly changing. Here's a list of artists who have collaborated with the group: [b]Lead vocals[/b]: Christopher Ballin, Chyna, Imaani, Dianna Joseph, Jocelyn Brown, Joy Malcolm, Karen Bernod, Kelli Sae, Linda Muriel, Mark Anthoni, Maysa Leak, Pamela Anderson, Xavier Barnett, Ed Motta, Joy Rose, Tony Momrelle, Tessa Webb [b]Background vocals[/b]: Barry Stewart, Bernita Turner, Charlise Rockwood, Claudia Fontaine, Elizabeth Gray, Elizabeth Troy, Le