His song "Four Strong Winds" was voted "the most essential Canadian piece of music" in a CBC listeners' poll; Neil Young concurred. Ian & Sylvia were longtime Vanguard artists, but too early for quad, and their move to Columbia in 1970 didn't yield any quads, either.
https://www.nytimes.com/2022/12/29/arts/music/ian-tyson-dead.html
https://www.nytimes.com/2022/12/29/arts/music/ian-tyson-dead.html