Dr. Dre Nas' "Hustlers", and several beats on Eminem's Relapse album. Soul and R&B pianist Mark Batson, having previously worked with The Dave Matthews Band, Seal and Maroon 5 has been credited as the architect of this sound. Besides Batson, Aftermath producer and understudy of Dre's, Dawaun Parker, who has named Q-Tip and J Dilla as his primary influences, is thought to be responsible for giving Dre's newest beats an East Coast feel. Dr. Dre has said that his primary instrument in the studio is the Akai MPC3000, a drum machine and sampler, and that he often uses as many as four
Dr. Dre 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. Planned but unreleased albums during Dr. Dre's tenure at Aftermath have included a full-length reunion with Snoop Dogg titled "Breakup to Makeup", an album with fellow former N.W.A member Ice Cube which was to be titled "Heltah Skeltah", an N.W.A reunion album, and a joint album with fellow producer Timbaland titled "Chairmen of the Board". In 2007, Dr. Dre's third studio album, formerly known as "Detox", was slated