In November 2006, Dr. Dre began working with Raekwon on his album "Only Built 4 Cuban Linx II". He also produced tracks for the rap albums "Buck the World" by Young Buck, "Curtis" by 50 Cent, "Tha Blue Carpet Treatment" by Snoop Dogg, and "Kingdom Come" by Jay-Z. Dre also appeared on Timbaland's track "Bounce", from his 2007 solo album, "Timbaland Presents Shock Value" alongside, Missy Elliott, and Justin Timberlake. During this period, the D.O.C. stated that Dre had been working with him on his fourth album "Voices through Hot Vessels", which he planned to release after "Detox" arrived.