Taking you back to the start of the 13th century ... Perotin's 'Viderunt Omnes' - first as written, for voices, and then for string quartet :
Let's go a bit further back - eleventh century. I wasn't sure about this trip-hop treatment of Hildegarde von Bingen's Viridissima Virga, by Swedish band Garmana, but it grows on you.
More from the source :
1 hour ago