HAPPENIN’ OTSEGO for TUESDAY, AUGUST 8 Cooperstown Summer Music Fest Presents ‘Nuevo Tango’ MUSIC FEST—7 p.m. Nuevo Tango. Argentinian bandoneon master JP Jofre joins highly-acclaimed Cuban-American cellist Tommy Mesa for a program exploring the fusion of classical music and tango. Part of the Cooperstown Summer Music Festival 25th anniversary season. $30, adults; $15, students under 18. Purchase tickets in advance at www.cooperstownmusicfest.org. Otesaga Resort Hotel, 60 Lake Street, Cooperstown. SENIOR SOCIAL SIGN-UP – Seniors aged 50+ are invited to register for an hour…