I fully recommend the band Múm. It's weird, unless you keep an open mind or are already in to stuff like Boards of Canada etc., you'll probably not think to highly of it. But I recommend it. Honestly, I think it's some of the most beautiful music I've heard in a very long time. "Green Grass of Tunnel" from the album Finally We Are No One makes me happy. The album Yesterday Was Dramatic - Today Is OK in its entirety is similarly smile-inspiring. I love this stuff.
As an aside, I realize it's very non-music-elitist of me to have not thoroughly consumed Múm's ouevre already, as they're days of big hype were like in 2001 or something. But oh well. I'm just now getting around to it.
As another aside, if you dig Múm at normal volumes, it's even better really loud. Give it a try. At any rate, this is probably some of the music I'd want to be listening to if I knew I my hearing was going to fail soon anyway. :)