A new version of the song (with accompanying vocals by Kate & Anna McGarrigle) which had a completely different tempo than the original, was made into an animated short film entitled Blackfly by Christopher Hinton and the National Film Board in 1991, and was nominated for Best Animated Short Film at the 64th Academy Awards,[1] and for Best Animated Short at the 13th Genie Awards,[2] in 1992.
Although Hemsworth had stated he wrote the song while in Labrador,[3] the song talks about the experiences he had while accompanying a Hydro-Electric Power Commission of Ontario crew surveying the Little Abitibi River to the determine the feasibility of erecting a dam,[4][5] the Abitibi Canyon Generating Station.
In addition, the verses for the most part hold an upbeat key, coming into contact with the abrasive chorus.
Hemsworth provided a folksy tone and Canadian raising, and added some unique touches.
To illustrate resentment for the flies, he places heavy emphasis on "black" in the words "black fly", but arguably the most distinct part of the song is where the word "Ontario" is stretched to "On-terr-eye-oh-eye-oh" (a pronunciation also used at times by other artists, such as Alan Mills and Stan Rogers).