HAPPENIN’ OTSEGO for FRIDAY, MAR. 16 Mother Son Dance SHAMROCK SWING – 6 – 9 p.m. Mother’s and Sons, enjoy dinner, dancing, activities, and win prizes. Cost, $65/couple. Foothills Performing Arts Center, Oneonta. call 607-431-2080 or visit foothillspac.org CHAMBER ENSEMBLE – 7:30 p.m. The Capital Trio performs works by Dvorak & Haydn. Free, open to the public. Anderson Theater, Hartwick College, Oneonta. Call 607-431-4000 or visit www.hartwick.edu…