30/30-150 lost to this Rhiannon Giddens song at the 49th annual Grammy Awards. The writer of that Rhiannon Giddens song and Marcus Mumford were both musicians.
Toms Enrique Araya Daz (born June 6, 1961) is a Chilean American musician, best known as the vocalist and bassist of the American thrash metal band Slayer. 
Marcus Oliver Johnstone Mumford (born 31 January 1987) is a British-American singer, songwriter, musician and producer best known as the lead singer of the band Mumford & Sons. 
 "Eyes of the Insane" was written by vocalist Tom Araya during pre-production for the album. 
 The song received a nomination for "Best Metal Performance" at the 49th annual Grammy Awards, but lost to "Eyes of the Insane" by Slayer. 
