WORD ON A WING - BOWIE: The Ultimate Casting Director. Four of Bowie's greatest collaborators - Earl Slick, Mike Garson, Mark Plati & Gerry Leonard - talk about their life and times with David Bowie and how he choose them. The tours, the venues, the hotels, the travel and, of course, the phenomenal live performances that made Bowie the ultimate showman and rock icon. Chaired by Irish Times journalist Tony Clayton Lea.