Commemorate a time-honored S.B. tradition upon the steps of the Old Mission (2201 Laguna St.) this week at La Fiesta Pequeña, the opening event for Old Spanish Days in Santa Barbara. In true Fiesta fashion, the annual celebration will feature an array of traditional dancing and songs, ranging from Mexican folklórico dance to Californio crooning. The party begins at 8 p.m. this Wednesday, August 4. Call 962-8101 for more info.