The Edmund Fitzgerald sank 50 years ago.

Gordon Lightfoot’s ballad, “The Wreck of the Edmund Fitzgerald” became one of the biggest hits of 1976, “less than a year after the disaster it commemorates.” writes Neda Ulaby for NPR:

The Canadian musician had agonized over writing the song in the first place.

“He feared being inaccurate, corny or worse, appearing to exploit a tragedy for profit,” writes John U. Bacon in his new bestseller, The Gales of November: The Untold Story of the Edmund Fitzgerald. “But more than that, as a fellow sailor and a child of the Great Lakes … this song – whatever it was – was deeply personal.”

“From 1875 to 1975, there were at least 6,000 commercial shipwrecks on the bottom of the Great Lakes,” Bacon told NPR. “So that is one shipwreck a week every week for a century. That is one casualty every day for a century.”