Dr. Dre chanting "DEEE-TOX", to which he replied, "I'm coming!" On November 14, 2011, Dre announced that he would be taking a break from music after he finished producing for artists Slim the Mobster and Kendrick Lamar. In this break, he stated that he would "work on bringing his Beats By Dre to a standard as high as Apple" and would also spend time with his family. On January 9, 2012, Dre headlined the final nights of the 2012 Coachella Valley Music and Arts Festival, on the weekends of April 13–15 and April 20–22, 2012. In a June 2014 interview with RapUpTV,
Dr. Dre absence of radio airplay or major concert tours. The Federal Bureau of Investigation sent Ruthless Records a warning letter in response to the song's content. After Ice Cube left N.W.A in 1989 over financial disputes, Dr. Dre produced and performed for much of the group's second album "Efil4zaggin". He also produced tracks for a number of other acts on Ruthless Records, including Eazy-E's 1988 solo debut "Eazy-Duz-It", Above the Law's 1990 debut "Livin' Like Hustlers", Michel'le's 1989 self-titled debut, The D.O.C.'s 1989 debut "No One Can Do It Better", J.J. Fad's 1988 debut "Supersonic" and funk rock musician Jimmy Z's