“Sunshine on my shoulders makes me happy,” goes one of John Denver’s most well-known songs. In a little over five minutes – and even less in its single version – “Sunshine” touches on many of the themes most important to the singer-songwriter: nature, love, beauty. Throughout the course of a career sadly cut short when he perished in a plane crash in 1997 aged just 53, Denver revisited these themes over and over again, using his pure, crystalline tone to bring comfort and spread a message of