Geldof spearheaded the Live Aid concert for famine relief in Ethiopia, and now works with assorted back-up musicians.
Founded in 1974 as a one-time celebration to mark Winnipeg's 100th anniversary, the festival has since grown into an annual musical event.
The event features 60 acts representing over 200 musicians, and runs from July 10-13.
Rosie O'Donnell unveils nearly 50-pound weight loss
Disney's 'Jessie' to feature network's first engagement