"Kush" is a single by American rapper Dr. Dre, featuring vocals by Snoop Dogg and Akon. It was released via Digital download on November 18, 2010. The song was produced by DJ Khalil and mixed by Dr. Dre, with additional keys by Daniel "Danny Keyz" Tannenbaum. The song has additional vocals by Sly "Pyper" Jordan, Kobe Honeycutt and Blackthoven.

On November 16, 2010 an unfinished version of the song leaked onto the Internet. On the same day, Dr. Dre spoke on Radio Big Boy regarding the status of his album and the leaked song:

"I see a finish line right now, I'm wrapping it up, I need about two or three more songs and hopefully I will start the mixing process at the end of next month and from that point I am about 30 days out, so I'm excited about it." "Kush got leaked, it was a version of it that got leaked that I wasn't really happy about, so we are gonna go in push it and put it out because everyone seems to like it. Y'know I just thought, like, the content it's about weed smoking and I don't want people to think that's what my album is about, this is actually the only song with that type of content in it."

Later that same day, a mastered version of "Kush" was released along with the creation of a new website. The song was featured in episode fourteen of season eleven of CSI.

The song was originally going to be the only one from his upcoming studio album that had a smoker type of subject matter, but on September 21, 2011, Dre tweeted that both "I Need a Doctor" and "Kush" would not make the final cut of the album.

"Kush" took three to four months to complete due to the numerous production stages that it eventually went through. The genesis of song came when Dr. Dre's request for a single prompted producer DJ Khalil to pick out an archived vocal sample he had previously made of songwriter collaborator Kobe Honeycutt that he felt would be perfect to build a new Dre track around. Khalil told HitQuarters that he began with the sample of Honeycutt saying "Hold up, wait a minute, let me put some kush up in it", which he looped in Reason, and the drums, which he tried to make sound "pulsating and clubby". Keyboard player Danny Keyz then added a synth which Khalil then filtered and washed out with a reverb. To this basic track they started adding hook parts and different vocals with the aim of giving the song a constantly evolving sound, but at the same time Khalil was mindful to keep the production as open and spare as possible.

...
Wikipedia