Two of the biggest stoners in rap, Wiz Khalifa and Curren$y, will usher in 4/20 with a special mixtape called 'Live in Concert.'

During a live YouTube stream, the dynamic duo announced that the project will be available for download on Saturday (April 20).

Not only is 4/20 a smoker's holiday but it's also Record Store Day so this is a special treat for both weed heads and music fans alike.

The project was slated to come out last year but sample clearances halted the release.

"There were some hurdles, a little red tape we had to cut through in the music business that happens to keep us from getting sued," said Curren$y.

This will be Wiz and Curren$y's second collaborative project since 2009's 'How Fly.'

Wiz will also announce the line-up on his Under the Influence of Music tour on Saturday. The 'Stoned Immaculate' rapper should be on the bill. Last year, the tour featured rhyme-spitters Mac Miller, Chevy Woods and Black Hippy members Kendrick Lamar and Schoolboy Q.

“We got some really big names on there,” teased Wiz.

Get ready for a stoned out summer with Wiz and Curren$y.

Watch Wiz Khalifa and Curren$y Announce Their 'Live In Concert' Mixtape