Ultimate Tango School of Dance presents its weekly Short Sequences and Practica program at the Medford Lodge of Elks. Short Sequences takes place from 7:30 to 8:15 p.m., followed by the Guided Practica from 8:30 to 11:30 p.m. Solo Exercises Carlitos Perez way make up the first 30 minutes of the Practica. Cost is $25 for the entire four-hour session, or $10 for just the three-hour Practica Chiquita. Register through the Ultimate Tango website.