Mike Brenner was halfway done recording the last Slo-Mo album of Dobro-steel-guitar driven, Phillycentric, slo-groove rock, roots 'n' soul when his producer brought in local rapper Mic Wrecka to help on a song that became the killer title cut: "My Buzz Comes Back."

"We clicked so well I erased much of what I'd recorded and remade the album with him," said Brenner. Wrecka's on the new "Smokey Mountain" disc, as are vocalists/players Sue Rosetti and Steph Hayes (Stargazer Lily) and Lauren Hart, plus bassist Steve Demarest and percussionists Mark Schreiber and Hoagy Wing. The new disc is "much more organic and cohesive," assesses Brenner, "with a '70s R&B-band feel sometimes popping through."

The tunes are catchy as hell, the production playfully perverse — twangy and urbane at the same time.Celebrate the album release twice, with a free-at-noon concert on WXPN (88.5-FM), then an evening show.

World Cafe Live, 3025 Walnut St., 7:30 tonight, $15 and $25, 215-222-1400, www.worldcafelive.com.

— Jonathan Takiff