American music lost one of its best songwriters with the passing of Jason Molina last March. Molina was known for his work with Songs: Ohia and Magnolia Electric Co. As a tribute this week on Jimmy Kimmel Live, and as a way of spreading awareness for a May 11 concert in Molina’s memory, Band of Horses covered one of the late musician’s songs, “I’ve Been Riding With the Ghost.” (Original.)