Bon Iver needs no real introduction, but this is the single from his latest record and it makes me desperate to see him play live again. He reduced a whole field of people to tears at Glastonbury a couple of years ago. This clip of him and his buddies singing a beautiful a cappella rendition of For Emma will give you an idea of how.
I've recently discovered Jon Ronson's (writer of fabulous The Men Who Stared At Goats) programme for Radio 4 called Jon Ronson On. I only really discovered the show because Adam Buxton of Adam and Joe recommended it and now I've discovered this track by Husky Rescue. I'm basically like some kind of cultural magpie. But do listen to Jon Ronson On, it's really fantastic, especially the one on Voices In Your Head, you can listen to them all, here.
I just found this version of Alela Diane's wonderful Tatted Lace, I think it probably speaks for itself. It makes me wish I was better at better playing guitar.