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Wiz Khalifa's "Under the Influence of Music" tour is losing one of its key performers.  Wiz has announced that Tyga pulled out of the road trip. 

On Twitter, Tyga explained that he wanted to participate in the outing, but can't because he just finished his album.  His time is also being occupied with a film he's working on.  Tyga apologized to fans and promised see them next time. 

Tyga's latest album, The Gold Album: 18th Dynasty, is set to arrive later this year. 

Even without Tyga, the "Under the Influence" tour will still feature some top-notch talent.  Apart from Wiz, the tour will include performances from Jeezy, Ty Dolla Sign, Sage the Gemini and Rich Homie Quan.  The road trip kicks off July 24th and will run until August 23rd. 

Photo: Getty Images