Here’s the official description:

In preparation for the long-awaited Shady Records’ Slaughterhouse debut, “welcome to: OUR HOUSE”, DJ Pizzo cooks something up to hold the heads over. As a resident DJ at the top nightclubs in both Las Vegas and Los Angeles, Pizzo selects many of Joe Budden, Royce Da 5’9, Joell Ortiz, and Crooked I’s freestyles into one continuous, smoothly blended “club mix”. Pizzo remastered and remixed many of the freestyles to include the songs’ original hooks, hence the title “House Party”.