Longest lapsed time between performances by a high school band leader

Longest lapsed time between performances by a high school band leader
Who
Dal Richards
Where
Canada (Vancouver)
When
The longest lapsed time between performances by a high school band leader is 75 years, and was achieved by Dal Richards (Canada) after performing as band leader at the Magee Secondary School in Vancouver, British Columbia, Canada, on 31 May 2012.