Ultimate Tango School of Dance in Medford presents its 35th Virtual Tuesday program of the pandemic. Virtual Short Sequences is offered at 7:30 p.m., featuring additional lessons in the Volcaditas series. Virtual Solo Exercises follows at 8:30 p.m. Classy Heels is available as a prerecorded Vimeo video for a solo workout at home. There is no fee required for participating in live classes or for watching the prerecorded videos (dancers are encouraged to do both), but Ultimate Tango "kindly asks…