Ultimate Tango School of Dance in Medford presents its weekly Virtual Tuesday program. Virtual Short Sequences is offered at 7:30 p.m., featuring the start of a new four-week series on Cortes y Quebradas. Learn how to improvise with Cortes y Quebradas — signature steps of Argentine Tango. The cost for Virtual Short Sequences is $20 per session; register here: https://courses.ultimatetango.com/pages/short-sequences Virtual Solo Exercises, which caters to dancers with no partner, is presented at 8:30 p.m. There is no fee for…