DJ Z-Trip has piled on the credentials of late. Along with entertaining the troops for Operation MySpace and spinning in China during the Olympics, the Arizona native pumped up crowds at the Democratic National Convention. Suddenly, Thursday night's stop at Abe & Jake's seems like an intimate performance. Considered to be one of the founders of the mashup movement, Z-Trip is just as likely to throw Metallica or Rush on the turntable as he is your favorite hip-hop break beats. From reading his Web site, one thing is certain. We can expect a healthy dose of politics with his "ever-evolving Obama set."