 You're listening to Sound Opinions and our classic album dissection of Prince's 1984 blockbuster, Purple Rain. You know, Greg, in thinking about Purple Rain's influence, there's no bigger testament, I think, to its greatness other than the number of groups that have covered music from this record, which range all over the map, from the Chicago punk band Apocalypse Hoboken to the Indie-tronica combo Chairlift.