An eerie but soulful clarinet melody pierces the chatter and clanging of The Boro on a summer Friday night.

Grayson White joins in with her violin. The lines intertwine and the latest installment of the six-year-long artistic oddesy that is Juan Prophet Organization has begun.

Their sound is chill but warm, relaxing but at times abrupt and intense, always together and very deliberate.

The band?White, her brother Kris, Jeff Holt, David Jellema and Matt Crisafi, the bandaged man keeping the beat?can be labeled experimental rock with a big band twist, or psychedelic jazz perhaps. Whatever the words, they’re truly one of the most creative groups around. Tonight they’re joined by Seafood Hotline’s Joe Leslie.

“We usually have a floating member,” White said.

Three of the guys can claim to be JPO’s bass player, I suppose. Leslie, Kris White and Holt, who put down the accordion for a moment to supply some very cool four-string finger picking, all provided some low end at their June 30 show.

The band’s atypical instrumentation, versatility and funkiness combined with White’s incredible vocal range makes for a tasty bite of live music.

While the group says it stays on the road as much as possible, they will focus on recording in the months to come.

JPO will perform again Sept. 16 at The Boro with burlesque troupe Lady and the Tramps.