WHEN JOHNNY CASH first flew over Ireland in 1959, he was so struck by what he saw below that he wrote a song before the plane had even landed. The song Forty Shades of Green (yes, the Man in Black was the person to popularise this phrase) was penned as Cash looked down at the Irish landscape from the air, inspired by the country’s vivid patchwork of fields. The lyrics namecheck the River Shannon, Dingle and Tipperary, capturing a sense of wonder and nostalgia that felt worlds away from his black-clad image. It remains one of the most tender songs...