"South Side of the Sky" is a song by progressive rock band Yes from their album Fragile. It is one of the relatively few group performances on the album.
It opens with the sound of a howling wind. It then bursts into a heavy, riff-dominated rock song. At around 2:08, Rick Wakeman's piano comes in along with another few seconds of wind. The piano is gentler than the rest of the song, and even somewhat classical, but…
A river a mountain to be crossed
The sunshine in mountains sometimes lost
Around the south side so cold that we cried