Wiz Khalifa's Under the Influence of Music Tour will be less one person this year. Tyga has pulled out of the tour in order to focus on finishing up his fourth studio release, The Gold Album: 18th Dynasty. 

Khalifa announced the departure Thursday (July 10) tweeting, "Tyga Dropped of [sic] the tour," which was followed up by the "Rack City" rapper's own explanation. "Sorry ya'll. sorry to all the fans. I'll c ya'll next time," he tweeted. "I wanted to be apart [sic] of the tour. But I'm finishing'  Up my album and filmin a movie."

Tyga's departure won't hold up the touring process. In anticipation of the month-long jaunt, Khalifa released a hilarious promo video called the "Under the Influence Training Camp," which makes mention of Tyga.

The Under of the Influence of Music Tour is scheduled to kick off July 24 in Scranton, Penn. The show lineup includes Jeezy, Ty Dolla $ign, Rich Homie Quan, Sage the Gemini, Iamsu! and Mack Wilds.

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(Photos from left: John Ricard / BET, Bennett Raglin/BET/Getty Images for BET)