the vocals do sound kind of fake, which could be a stylistic choice, but it doesn't really work with brick. I think it's a little too loud/hard on the vocals throughout most of it too. You (?) sound more angry than sorrowful.
As to brick being a Christmas song, this came up watching the Sing Off last night, as I said that Ben doesn't really have any well known Christmassy songs. My friend Kate thinks for a couple of seconds and says "well, there's Brick." We didn't stop laughing for a while.