Congolese rhythms suggest a great, clean expanse of canvas, held taut at both ends and lifted up and down in see-saw undulations. The patter of the ngoma is relentless and restless, always there but constantly rising and falling, accelerating and decelerating. Congo-born dancer, percussionist, teacher, bandleader and Cary resident Pline Mounzeo has been building these rhyhms since he was a pre-teen. He leads a two-hour workshop here, followed by a performance that will include the evening's prize pupils. THURSDAY, JAN. 31, AT THE ARTSCENTER. $6–$22/6:15 p.m.