A remix of the World 7 theme from New Super Mario Bros. Wii. Looks like we're up in the sky already with no mountain world prior. (First New Super Mario Bros. 2, now this?). I'm still more upset by the lack of a snow world, even though this is a puzzle game. I like snow/ice levels. At least the two worlds not based on ones from NSMBWii (worlds 2 and 8) more than make up for it.