Canadian country music icon Ian Tyson, who found his greatest renown as half of the '60s folk-singing duo Ian and Sylvia, passed away aged 89 on Thursday.

According to Variety, a US-based news outlet, the cause of death was attributed to "ongoing health complications." Ian and Sylvia's most famous song, the Tyson-penned "Four Strong Winds," released in 1963, became a folk standard. Countless musicians have covered it over the past six decades, including Neil Young (on his "Comes a Time" album), Bob Dylan, Johnny Cash, John Denver, Teenage Fanclub, the Carter Family, Marianne Faithful, Waylon Jennings, Bobby Bare, Gillian Welch, and Conor Oberst. "Four Strong Winds" was chosen as the most crucial piece of Canadian music by CBC listeners in 2005.