Four acts described in 10 words or less: SounDoctrine? Funktastic instrumental contemporary jazz. Alison Crockett? Neo-soul songstress with a rock touch. Ace Boogie? One of 67 known rappers nationwide named Ace Boogie. (Really; check MySpace.) The PolyRhythm Addicts (pictured)? Imagine an underground Fugees. In summary, this evening’s edition of the Excursions Concert Series? Pure soul.

This article appears in Aug 22-28, 2007.