I just gave this a listen, I had wanted to for awhile..
It was okay I guess, didn't really catch me, except for Such Great Heights, which I had heard before.
6.5/10
Though I do get what you mean by light sounding.
It took me a few listens to really get into it. We Will Become Silhouettes is a particularly good one. Me and the little attention I pay to lyrics was the reason I didn't really see how great it was from the start. Sounds really happy for what it's actually about.
Sleeping In just has the nicest lyrics though. Just really cute idea. Kind of wish the world was like how it's described in that song.
Natural Anthem as well was really great. I don't know what kind of genre of electronica it's reminding me of though, maybe drum and bass, even though it's not really that, just similar. really loved it.
And there's just my three favourite tracks that kind of make the album for me.

Jónsi & Alex - Riceboy Sleeps - 2009
7/10
Brilliant ambient album. From Jón Þór Birgisson (Jónsi) of Sigur Rós and his boyfriend Alex Sommers. Haven't put a whole lot of thought into how much it does or doesn't sound like Sigur Rós. It's just really really good calming stuff though. First ambient album that I really listened to. It's really really good good is all I'm saying.
And for a sample, here's the first track, Happiness.

Fleet Foxes - Helplessness Blues - 2011
8/10
This is actually fantastic. It leaked really early, so naturally people put it straight onto Youtube. Listened to it through on there. Wasn't a huge fan of the debut, though maybe that'd be down to the fact that I haven't really listened to it a whole lot. But this second album is much better. So much happier, with more going on. Same kind of reaction I had to Vampire Weekend's second album, which kicked the first one's ass.
Bedouin Dress, the second track, really caught my attention. Definitely recommend this album if you liked the first. And if you haven't listened to Fleet Foxes yet, then you should, in whatever order you like. Chronological is best though.