HAPPENIN’ OTSEGO for SATURDAY, OCT. 21 Halloween Festival SCARE FEST – 2-7 p.m. Bring the kids to a fun fall event featuring potato sack races, wheel barrow races, hayride, pumpkin painting, country music, a costume contest, more. Otsego County Fair Grounds, Mills St., Morris. Call 607-263-5289 or visit www.facebook.com/otsegocountyfair/ CONCERT SERIES – 7:30 p.m. Presenting “Friction Farm,” a modern fold duo of traveling troubadours who combine storytelling, social commentary and humor to create their songs. First Presbyterian Church, 25 Church St., Cooperstown.…