There are countless Bob Marley compilations on the market, but what will generate some interest in this one, which is essentially a collection of his Island singles with a handful of his Lee "Scratch" Perry-era tracks added in, is the inclusion of a "new" Marley song, "Slogans," derived from a demo tape Marley made in a Miami hotel room in 1979. The demo tape was rediscovered in 2003 by Marley's sons Ziggy and Stephen, who then worked to finish the song, calling in Eric Clapton and Marcia Ball, among others, to help with the process. The end result is a solid, if a bit underwhelming, addition to the Marley catalog, but there is no denying "Slogans" is tuneful, wise, and increasingly timely, as politicians continue to mouth slogans as promises, and then routinely manage to not keep them. The other two "new" tracks here are remixes, one by the Black Eyed Peas' will.i.am of "Africa Unite" and the other by Ashley Beedle, who grafts Marley and Peter Tosh's "Get Up, Stand Up" to Damian Marley's "Welcome to Jamrock" to create the atmospheric "Stand Up Jamrock." Both are interesting attempts to gently update Marley's sound for the 21st century, but one wonders if Marley's body of work even…