This is DJ Invasion's "Rosebudd Infantry: The Marcberg Files," which is a mash-up mixtape of Roc Marciano's vocals seamlessly blended with beats by the Alchemist. The 13-track mix also includes vocals from Vic Spencer, Westside Gunn, St. Joe Louis, Vinnie Paz, Guilty Simpson, O.C., Royce Da 5'9, Planet Asia and Prodigy (R.I.P.). DJ Invasion wants it to be clear, this is a fan made project and is not an official release from Roc Marciano or The Alchemist. Projects like this are a labor of love, and this one is especially well-crafted, so props to DJ Invasion (and the artists). Check it out below...