Denver’s “Annie’s Song” was a monster hit for the folk singer turned pop/country 1970s superstar. Fans probably know that the song was written for Denver’s wife Annie Martell Denver.

Prior to 2023, when Wallen topped it with "Last Night," no country song had come in at No. 1 on the chart since John Denver's "Annie's Song" in 1974, Billboard reports. That means that it took 49 ...