Windsong is the ninth studio album recorded by American singer-songwriter John Denver, which was 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. "Looking for Space" was dedicated to Werner Erhard, "Two Shots" to Michael P. Shore and "Calypso" to Captain Jacques-Yves Cousteau and all those who served on his ship, Calypso.