Dr. Dre Fiona Apple and Alanis Morissette, In the past few years Elizondo has since worked for many of Dr. Dre's productions. Dr. Dre also told "Scratch" magazine in a 2004 interview that he has been studying piano and music theory formally, and that a major goal is to accumulate enough musical theory to score movies. In the same interview he stated that he has collaborated with famed 1960s songwriter Burt Bacharach by sending him hip hop beats to play over, and hopes to have an in-person collaboration with him in the future. Dr. Dre has stated that he is a perfectionist
Dr. Dre can control it better." Other equipment he uses includes the E-mu SP-1200 drum machine and other keyboards from such manufacturers as Korg, Rhodes, Wurlitzer, Moog, and Roland. Dr. Dre also stresses the importance of equalizing drums properly, telling Scratch magazine in 2004 that he "used the same drum sounds on a couple of different songs on one album before but you'd never be able to tell the difference because of the EQ." Dr. Dre also uses the digital audio workstation Pro Tools and uses the software to combine hardware drum machines and vintage analog keyboards and synthesizers. After founding Aftermath