Mercer Island High School band performs at Victoria Day Parade May 25, 2017 2:00 pm The Mercer Island High School Band poses at the Parliament Building in Victoria BC after performing on May 21. Photo via Twitter About 250 students in the Mercer Island High School band participated in the 119th Island Farms Victoria Day Parade, which commemorated Canada’s 150th birthday. For more, see www.twitter.com/MIHSBand.