• Artist: Ludacris
• Track: What U Smokin’ On
• Feat. Wiz Khalifa
• Producer: Big K.R.I.T.
• Album: 1.21 Gigawatts: Back to the First Time

With his latest mixtape making the rounds in the hip-hop blogosphere, Ludacris has dropped off a slightly-modified rendition of standout cut What U Smokin' On for our listening pleasure. This version of the hazy, Big K.R.I.T.-produced burner finds the ATL heavyweight joined on the mic by a highly-appropriate collaborator: the perennially-blunted Wiz Khalifa. Fans can find the original version of this joint and much more on Luda's 1.21 Gigawatts: Back to the First Time street album, released yesterday and available now online.