Vocalist group Arstidir is from the Icelandic city of Reykjavik, but they sound as if they are angels from the heavens above.

They posted this video of an a cappella hymn performance in a German train station a month ago, but the piece is still trending online.

The way the tunnels reverberates their voices literally brought commuters to a halt in awe. Online viewers feel similar as the clip stands with over 215,000 hits