The sisters Johanna and Klara Söderberg from Stolkhom Sweden, make up the act First Aid kit. They are 15 and 18 years of age which I think is really young considering the sound of their voices. I stumbled over their cover version of the Fleet Foxes Tiger Mountain Peasant Song which was filmed somewhere in the forest as a dedication to them. From then I aboulute fell in love with their feeling for harmonies. Sweet and simple. Check out the performances on youtube or myspace and get your hands on the album Drunken Trees.