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 the song "Set It Off" by Canadian rapper Kardinal Offishall (also with Pusha T); the remix debuted on DJ Skee's radio show. At the beginning of 2009, Dre produced, and made a guest vocal performance on, the single "Crack a Bottle" by Eminem and the single sold a record 418,000 downloads in its first week and reached the top of the "Billboard" Hot 100 chart on the week of February 12, 2009. Along with this single, in 2009 Dr. Dre produced or co-produced 19 of 20 tracks on Eminem's album "Relapse". These included other hit singles "We Made You", "Old