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Travis Barker says the next Transplants album is "all over the place."  The Blink-182 drummer's rap-rock side-project is scheduled to release its third studio effort, In a Warzone, later this summer. 

Barker tells "Billboard" it ranges from songs that will make you want to smack someone, to others that are just "good driving songs." 

This time around the Transplants - which includes Rancid's Tim Armstrong and vocalist Rob Aston as well - will be joined by guest rappers Bun B, Paul Wall, and EQUIPTO. 

In a Warzone is due out June 25th. 

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