by Stephen Thomas ErlewineWindsong was released at the peak of John Denver's career, and rode to Number One on the strength of his previous success, and the epic "Calypso," which happened to provide the touchstone for the album. Essentially, Windsong is an album about communing with nature, and an overall thematic thrust is missing from many other Denver records. There may not be that many songs that match "Calypso," but many come close, helping elevate Windsong into Denver's front rank of albums. Windsong is the ninth album by American singer-songwriter John Denver released in September 1975. Denver's popularity was at its peak by this time. The album contained the songs "I'm Sorry" and "Calypso," which comprised a two-sided hit for Denver in the fall of 1975.