Thousands of country, rock, blues and Americana fans descended on a Kent park this weekend to celebrate the best of American counter-culture. Black Deer, a three-day music festival at Eridge Park in Tunbridge Wells, returned this weekend (June 14 to June 16) in full force, despite some drizzle from the great British weather. This year saw an exclusive UK festival performance from Grammy-nominated blues guitarist Joe Bonamassa. The line-up also included country duo The Shires, American guitarist Seasick Steve, singer-songwriter Rufus Wainwright and Latin band Hermanos Gutiérrez. Chart-topping s…