HAPPENIN’ OTSEGO for SATURDAY, FEBRUARY 18 Dueling Pianos at the Foothills COMEDY SHOW—6-9 p.m. Enjoy a fun show featuring the “Not Quite So Dueling Pianos” and Hartwick College alum Patrick Duffy. This is an all-request show where the audience picks the set list. Tickets, $20/person at the door. Presented at the Foothills Performing Arts and Civic Center, Oneonta. (607) 431-2080 or visit foothillspac.org TAX PREP—10 a.m. to noon and 1-3 p.m. Get ready for tax season with the IRS Volunteer Income Tax…