They were one of my firsts, too! They played at my high school in 1971 or possibly '72. I saw them again several years later at the CNE in Toronto.
Odd how this should come up right now, because I just located a copy of “The April Wine Collection” box set (long out of print), and I’m listening to it and reading the booklet. Man, there are enough killer riffs in “Fast Train” for four songs!
Go Myles!