They sing about homesickness, love, war and forgiveness: drug dealers, thieves and murderers jailed in Russia's many prisons and penal camps. And they all dream of taking part in the prison song contest Kalina Krasnaya. Each of Russia's 700,000 prisoners has the opportunity to participate, but only about 30 make it to the final. For Natalia Abashkina, director of the show and s......