Ultimate Tango School of Dance in Medford is offering a four-week Tango Fundamentals Course for advanced dancers on Sunday afternoons from January 10 through 31. Presented via Zoom, the course is meant for non-beginners who already know the basic principles and structure of Argentine Tango. It introduces all essential tango elements adding ochos, giros, medialunas, basic sacadas, barridas and passadas into danceable sequence. Cost is $120 for the course. Register through the Ultimate Tango website: https://courses.ultimatetango.com/pages/virtual-advanced-courses