Few places invite people in to learn the art of Afro-Brazilian percussion and dance the way SambaL? does. Their weekly classes, plus their once-a-month Saturday Samba night at Blue Cafe, are nearly enough to transport you to the stomping, euphoric street throb that is Brazil's yearly Carnaval. SambaL?'s Thursday-evening bateria (percussion) class teaches the caixa, pandeiro, surdo, tam-tam and a string of other instruments. Samba-dance classes are offered Tuesday nights (beginning/intermediate) and Wednesday nights (advanced and by invitation only) at the Blue Cafe. All classes cost just $15.